31811080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:239

約数の個数: 128

約数和(自身を含む): 89268480

約数和(自身を除く): 57457400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 41, 56, 68, 70, 82, 85, 119, 136, 140, 163, 164, 170, 205, 238, 280, 287, 326, 328, 340, 410, 476, 574, 595, 652, 680, 697, 815, 820, 952, 1141, 1148, 1190, 1304, 1394, 1435, 1630, 1640, 2282, 2296, 2380, 2771, 2788, 2870, 3260, 3485, 4564, 4760, 4879, 5542, 5576, 5705, 5740, 6520, 6683, 6970, 9128, 9758, 11084, 11410, 11480, 13366, 13855, 13940, 19397, 19516, 22168, 22820, 24395, 26732, 27710, 27880, 33415, 38794, 39032, 45640, 46781, 48790, 53464, 55420, 66830, 77588, 93562, 96985, 97580, 110840, 113611, 133660, 155176, 187124, 193970, 195160, 227222, 233905, 267320, 374248, 387940, 454444, 467810, 568055, 775880, 795277, 908888, 935620, 1136110, 1590554, 1871240, 2272220, 3181108, 3976385, 4544440, 6362216, 7952770, 15905540, 31811080]

約数ペア:

[(1, 31811080), (2, 15905540), (4, 7952770), (5, 6362216), (7, 4544440), (8, 3976385), (10, 3181108), (14, 2272220), (17, 1871240), (20, 1590554), (28, 1136110), (34, 935620), (35, 908888), (40, 795277), (41, 775880), (56, 568055), (68, 467810), (70, 454444), (82, 387940), (85, 374248), (119, 267320), (136, 233905), (140, 227222), (163, 195160), (164, 193970), (170, 187124), (205, 155176), (238, 133660), (280, 113611), (287, 110840), (326, 97580), (328, 96985), (340, 93562), (410, 77588), (476, 66830), (574, 55420), (595, 53464), (652, 48790), (680, 46781), (697, 45640), (815, 39032), (820, 38794), (952, 33415), (1141, 27880), (1148, 27710), (1190, 26732), (1304, 24395), (1394, 22820), (1435, 22168), (1630, 19516), (1640, 19397), (2282, 13940), (2296, 13855), (2380, 13366), (2771, 11480), (2788, 11410), (2870, 11084), (3260, 9758), (3485, 9128), (4564, 6970), (4760, 6683), (4879, 6520), (5542, 5740), (5576, 5705)]