640675980

素因数分解:

$2^2\times 3^4\times 5^1\times 7^3\times {\mathrm{1153}}^1$

素因数の和:1195

約数の個数: 240

約数和(自身を含む): 2345851200

約数和(自身を除く): 1705175220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 245, 252, 270, 294, 315, 324, 343, 378, 405, 420, 441, 490, 540, 567, 588, 630, 686, 735, 756, 810, 882, 945, 980, 1029, 1134, 1153, 1260, 1323, 1372, 1470, 1620, 1715, 1764, 1890, 2058, 2205, 2268, 2306, 2646, 2835, 2940, 3087, 3430, 3459, 3780, 3969, 4116, 4410, 4612, 5145, 5292, 5670, 5765, 6174, 6615, 6860, 6918, 7938, 8071, 8820, 9261, 10290, 10377, 11340, 11530, 12348, 13230, 13836, 15435, 15876, 16142, 17295, 18522, 19845, 20580, 20754, 23060, 24213, 26460, 27783, 30870, 31131, 32284, 34590, 37044, 39690, 40355, 41508, 46305, 48426, 51885, 55566, 56497, 61740, 62262, 69180, 72639, 79380, 80710, 92610, 93393, 96852, 103770, 111132, 112994, 121065, 124524, 138915, 145278, 155655, 161420, 169491, 185220, 186786, 207540, 217917, 225988, 242130, 277830, 282485, 290556, 311310, 338982, 363195, 373572, 395479, 435834, 466965, 484260, 508473, 555660, 564970, 622620, 653751, 677964, 726390, 790958, 847455, 871668, 933930, 1016946, 1089585, 1129940, 1186437, 1307502, 1452780, 1525419, 1581916, 1694910, 1867860, 1977395, 2033892, 2179170, 2372874, 2542365, 2615004, 3050838, 3268755, 3389820, 3559311, 3954790, 4358340, 4576257, 4745748, 5084730, 5932185, 6101676, 6537510, 7118622, 7627095, 7909580, 9152514, 10169460, 10677933, 11864370, 13075020, 14237244, 15254190, 17796555, 18305028, 21355866, 22881285, 23728740, 30508380, 32033799, 35593110, 42711732, 45762570, 53389665, 64067598, 71186220, 91525140, 106779330, 128135196, 160168995, 213558660, 320337990, 640675980]

約数ペア:

[(1, 640675980), (2, 320337990), (3, 213558660), (4, 160168995), (5, 128135196), (6, 106779330), (7, 91525140), (9, 71186220), (10, 64067598), (12, 53389665), (14, 45762570), (15, 42711732), (18, 35593110), (20, 32033799), (21, 30508380), (27, 23728740), (28, 22881285), (30, 21355866), (35, 18305028), (36, 17796555), (42, 15254190), (45, 14237244), (49, 13075020), (54, 11864370), (60, 10677933), (63, 10169460), (70, 9152514), (81, 7909580), (84, 7627095), (90, 7118622), (98, 6537510), (105, 6101676), (108, 5932185), (126, 5084730), (135, 4745748), (140, 4576257), (147, 4358340), (162, 3954790), (180, 3559311), (189, 3389820), (196, 3268755), (210, 3050838), (245, 2615004), (252, 2542365), (270, 2372874), (294, 2179170), (315, 2033892), (324, 1977395), (343, 1867860), (378, 1694910), (405, 1581916), (420, 1525419), (441, 1452780), (490, 1307502), (540, 1186437), (567, 1129940), (588, 1089585), (630, 1016946), (686, 933930), (735, 871668), (756, 847455), (810, 790958), (882, 726390), (945, 677964), (980, 653751), (1029, 622620), (1134, 564970), (1153, 555660), (1260, 508473), (1323, 484260), (1372, 466965), (1470, 435834), (1620, 395479), (1715, 373572), (1764, 363195), (1890, 338982), (2058, 311310), (2205, 290556), (2268, 282485), (2306, 277830), (2646, 242130), (2835, 225988), (2940, 217917), (3087, 207540), (3430, 186786), (3459, 185220), (3780, 169491), (3969, 161420), (4116, 155655), (4410, 145278), (4612, 138915), (5145, 124524), (5292, 121065), (5670, 112994), (5765, 111132), (6174, 103770), (6615, 96852), (6860, 93393), (6918, 92610), (7938, 80710), (8071, 79380), (8820, 72639), (9261, 69180), (10290, 62262), (10377, 61740), (11340, 56497), (11530, 55566), (12348, 51885), (13230, 48426), (13836, 46305), (15435, 41508), (15876, 40355), (16142, 39690), (17295, 37044), (18522, 34590), (19845, 32284), (20580, 31131), (20754, 30870), (23060, 27783), (24213, 26460)]