1971172980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^4\times {\mathrm{4561}}^1$

素因数の和:4604

約数の個数: 180

約数和(自身を含む): 6976876452

約数和(自身を除く): 5005703472

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 343, 420, 441, 490, 588, 630, 686, 735, 882, 980, 1029, 1260, 1372, 1470, 1715, 1764, 2058, 2205, 2401, 2940, 3087, 3430, 4116, 4410, 4561, 4802, 5145, 6174, 6860, 7203, 8820, 9122, 9604, 10290, 12005, 12348, 13683, 14406, 15435, 18244, 20580, 21609, 22805, 24010, 27366, 28812, 30870, 31927, 36015, 41049, 43218, 45610, 48020, 54732, 61740, 63854, 68415, 72030, 82098, 86436, 91220, 95781, 108045, 127708, 136830, 144060, 159635, 164196, 191562, 205245, 216090, 223489, 273660, 287343, 319270, 383124, 410490, 432180, 446978, 478905, 574686, 638540, 670467, 820980, 893956, 957810, 1117445, 1149372, 1340934, 1436715, 1564423, 1915620, 2011401, 2234890, 2681868, 2873430, 3128846, 3352335, 4022802, 4469780, 4693269, 5746860, 6257692, 6704670, 7822115, 8045604, 9386538, 10057005, 10950961, 13409340, 14079807, 15644230, 18773076, 20114010, 21901922, 23466345, 28159614, 31288460, 32852883, 40228020, 43803844, 46932690, 54754805, 56319228, 65705766, 70399035, 93865380, 98558649, 109509610, 131411532, 140798070, 164264415, 197117298, 219019220, 281596140, 328528830, 394234596, 492793245, 657057660, 985586490, 1971172980]

約数ペア:

[(1, 1971172980), (2, 985586490), (3, 657057660), (4, 492793245), (5, 394234596), (6, 328528830), (7, 281596140), (9, 219019220), (10, 197117298), (12, 164264415), (14, 140798070), (15, 131411532), (18, 109509610), (20, 98558649), (21, 93865380), (28, 70399035), (30, 65705766), (35, 56319228), (36, 54754805), (42, 46932690), (45, 43803844), (49, 40228020), (60, 32852883), (63, 31288460), (70, 28159614), (84, 23466345), (90, 21901922), (98, 20114010), (105, 18773076), (126, 15644230), (140, 14079807), (147, 13409340), (180, 10950961), (196, 10057005), (210, 9386538), (245, 8045604), (252, 7822115), (294, 6704670), (315, 6257692), (343, 5746860), (420, 4693269), (441, 4469780), (490, 4022802), (588, 3352335), (630, 3128846), (686, 2873430), (735, 2681868), (882, 2234890), (980, 2011401), (1029, 1915620), (1260, 1564423), (1372, 1436715), (1470, 1340934), (1715, 1149372), (1764, 1117445), (2058, 957810), (2205, 893956), (2401, 820980), (2940, 670467), (3087, 638540), (3430, 574686), (4116, 478905), (4410, 446978), (4561, 432180), (4802, 410490), (5145, 383124), (6174, 319270), (6860, 287343), (7203, 273660), (8820, 223489), (9122, 216090), (9604, 205245), (10290, 191562), (12005, 164196), (12348, 159635), (13683, 144060), (14406, 136830), (15435, 127708), (18244, 108045), (20580, 95781), (21609, 91220), (22805, 86436), (24010, 82098), (27366, 72030), (28812, 68415), (30870, 63854), (31927, 61740), (36015, 54732), (41049, 48020), (43218, 45610)]