21670740

素因数分解:

$2^2\times 3^5\times 5^1\times 7^3\times {\mathrm{13}}^1$

素因数の和:58

約数の個数: 288

約数和(自身を含む): 85612800

約数和(自身を除く): 63942060

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 39, 42, 45, 49, 52, 54, 60, 63, 65, 70, 78, 81, 84, 90, 91, 98, 105, 108, 117, 126, 130, 135, 140, 147, 156, 162, 180, 182, 189, 195, 196, 210, 234, 243, 245, 252, 260, 270, 273, 294, 315, 324, 343, 351, 364, 378, 390, 405, 420, 441, 455, 468, 486, 490, 540, 546, 567, 585, 588, 630, 637, 686, 702, 735, 756, 780, 810, 819, 882, 910, 945, 972, 980, 1029, 1053, 1092, 1134, 1170, 1215, 1260, 1274, 1323, 1365, 1372, 1404, 1470, 1620, 1638, 1701, 1715, 1755, 1764, 1820, 1890, 1911, 2058, 2106, 2205, 2268, 2340, 2430, 2457, 2548, 2646, 2730, 2835, 2940, 3087, 3159, 3185, 3276, 3402, 3430, 3510, 3780, 3822, 3969, 4095, 4116, 4212, 4410, 4459, 4860, 4914, 5145, 5265, 5292, 5460, 5670, 5733, 6174, 6318, 6370, 6615, 6804, 6860, 7020, 7371, 7644, 7938, 8190, 8505, 8820, 8918, 9261, 9555, 9828, 10290, 10530, 11340, 11466, 11907, 12285, 12348, 12636, 12740, 13230, 13377, 14742, 15435, 15795, 15876, 16380, 17010, 17199, 17836, 18522, 19110, 19845, 20580, 21060, 22113, 22295, 22932, 23814, 24570, 26460, 26754, 27783, 28665, 29484, 30870, 31590, 34020, 34398, 36855, 37044, 38220, 39690, 40131, 44226, 44590, 46305, 47628, 49140, 51597, 53508, 55566, 57330, 59535, 61740, 63180, 66885, 68796, 73710, 79380, 80262, 83349, 85995, 88452, 89180, 92610, 103194, 110565, 111132, 114660, 119070, 120393, 133770, 138915, 147420, 154791, 160524, 166698, 171990, 185220, 200655, 206388, 221130, 238140, 240786, 257985, 267540, 277830, 309582, 333396, 343980, 361179, 401310, 416745, 442260, 481572, 515970, 555660, 601965, 619164, 722358, 773955, 802620, 833490, 1031940, 1083537, 1203930, 1444716, 1547910, 1666980, 1805895, 2167074, 2407860, 3095820, 3611790, 4334148, 5417685, 7223580, 10835370, 21670740]

約数ペア:

[(1, 21670740), (2, 10835370), (3, 7223580), (4, 5417685), (5, 4334148), (6, 3611790), (7, 3095820), (9, 2407860), (10, 2167074), (12, 1805895), (13, 1666980), (14, 1547910), (15, 1444716), (18, 1203930), (20, 1083537), (21, 1031940), (26, 833490), (27, 802620), (28, 773955), (30, 722358), (35, 619164), (36, 601965), (39, 555660), (42, 515970), (45, 481572), (49, 442260), (52, 416745), (54, 401310), (60, 361179), (63, 343980), (65, 333396), (70, 309582), (78, 277830), (81, 267540), (84, 257985), (90, 240786), (91, 238140), (98, 221130), (105, 206388), (108, 200655), (117, 185220), (126, 171990), (130, 166698), (135, 160524), (140, 154791), (147, 147420), (156, 138915), (162, 133770), (180, 120393), (182, 119070), (189, 114660), (195, 111132), (196, 110565), (210, 103194), (234, 92610), (243, 89180), (245, 88452), (252, 85995), (260, 83349), (270, 80262), (273, 79380), (294, 73710), (315, 68796), (324, 66885), (343, 63180), (351, 61740), (364, 59535), (378, 57330), (390, 55566), (405, 53508), (420, 51597), (441, 49140), (455, 47628), (468, 46305), (486, 44590), (490, 44226), (540, 40131), (546, 39690), (567, 38220), (585, 37044), (588, 36855), (630, 34398), (637, 34020), (686, 31590), (702, 30870), (735, 29484), (756, 28665), (780, 27783), (810, 26754), (819, 26460), (882, 24570), (910, 23814), (945, 22932), (972, 22295), (980, 22113), (1029, 21060), (1053, 20580), (1092, 19845), (1134, 19110), (1170, 18522), (1215, 17836), (1260, 17199), (1274, 17010), (1323, 16380), (1365, 15876), (1372, 15795), (1404, 15435), (1470, 14742), (1620, 13377), (1638, 13230), (1701, 12740), (1715, 12636), (1755, 12348), (1764, 12285), (1820, 11907), (1890, 11466), (1911, 11340), (2058, 10530), (2106, 10290), (2205, 9828), (2268, 9555), (2340, 9261), (2430, 8918), (2457, 8820), (2548, 8505), (2646, 8190), (2730, 7938), (2835, 7644), (2940, 7371), (3087, 7020), (3159, 6860), (3185, 6804), (3276, 6615), (3402, 6370), (3430, 6318), (3510, 6174), (3780, 5733), (3822, 5670), (3969, 5460), (4095, 5292), (4116, 5265), (4212, 5145), (4410, 4914), (4459, 4860)]