81573660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{641}}^1$

素因数の和:764

約数の個数: 144

約数和(自身を含む): 286034112

約数和(自身を除く): 204460452

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 101, 105, 126, 140, 180, 202, 210, 252, 303, 315, 404, 420, 505, 606, 630, 641, 707, 909, 1010, 1212, 1260, 1282, 1414, 1515, 1818, 1923, 2020, 2121, 2564, 2828, 3030, 3205, 3535, 3636, 3846, 4242, 4487, 4545, 5769, 6060, 6363, 6410, 7070, 7692, 8484, 8974, 9090, 9615, 10605, 11538, 12726, 12820, 13461, 14140, 17948, 18180, 19230, 21210, 22435, 23076, 25452, 26922, 28845, 31815, 38460, 40383, 42420, 44870, 53844, 57690, 63630, 64741, 67305, 80766, 89740, 115380, 127260, 129482, 134610, 161532, 194223, 201915, 258964, 269220, 323705, 388446, 403830, 453187, 582669, 647410, 776892, 807660, 906374, 971115, 1165338, 1294820, 1359561, 1812748, 1942230, 2265935, 2330676, 2719122, 2913345, 3884460, 4078683, 4531870, 5438244, 5826690, 6797805, 8157366, 9063740, 11653380, 13595610, 16314732, 20393415, 27191220, 40786830, 81573660]

約数ペア:

[(1, 81573660), (2, 40786830), (3, 27191220), (4, 20393415), (5, 16314732), (6, 13595610), (7, 11653380), (9, 9063740), (10, 8157366), (12, 6797805), (14, 5826690), (15, 5438244), (18, 4531870), (20, 4078683), (21, 3884460), (28, 2913345), (30, 2719122), (35, 2330676), (36, 2265935), (42, 1942230), (45, 1812748), (60, 1359561), (63, 1294820), (70, 1165338), (84, 971115), (90, 906374), (101, 807660), (105, 776892), (126, 647410), (140, 582669), (180, 453187), (202, 403830), (210, 388446), (252, 323705), (303, 269220), (315, 258964), (404, 201915), (420, 194223), (505, 161532), (606, 134610), (630, 129482), (641, 127260), (707, 115380), (909, 89740), (1010, 80766), (1212, 67305), (1260, 64741), (1282, 63630), (1414, 57690), (1515, 53844), (1818, 44870), (1923, 42420), (2020, 40383), (2121, 38460), (2564, 31815), (2828, 28845), (3030, 26922), (3205, 25452), (3535, 23076), (3636, 22435), (3846, 21210), (4242, 19230), (4487, 18180), (4545, 17948), (5769, 14140), (6060, 13461), (6363, 12820), (6410, 12726), (7070, 11538), (7692, 10605), (8484, 9615), (8974, 9090)]