20126890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:479

約数の個数: 64

約数和(自身を含む): 44870400

約数和(自身を除く): 24743510

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 37, 38, 70, 74, 95, 133, 185, 190, 259, 266, 370, 409, 518, 665, 703, 818, 1295, 1330, 1406, 2045, 2590, 2863, 3515, 4090, 4921, 5726, 7030, 7771, 9842, 14315, 15133, 15542, 24605, 28630, 30266, 38855, 49210, 54397, 75665, 77710, 105931, 108794, 151330, 211862, 271985, 287527, 529655, 543970, 575054, 1059310, 1437635, 2012689, 2875270, 4025378, 10063445, 20126890]

約数ペア:

[(1, 20126890), (2, 10063445), (5, 4025378), (7, 2875270), (10, 2012689), (14, 1437635), (19, 1059310), (35, 575054), (37, 543970), (38, 529655), (70, 287527), (74, 271985), (95, 211862), (133, 151330), (185, 108794), (190, 105931), (259, 77710), (266, 75665), (370, 54397), (409, 49210), (518, 38855), (665, 30266), (703, 28630), (818, 24605), (1295, 15542), (1330, 15133), (1406, 14315), (2045, 9842), (2590, 7771), (2863, 7030), (3515, 5726), (4090, 4921)]