20048980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2017}}^1$

素因数の和:2104

約数の個数: 48

約数和(自身を含む): 48819456

約数和(自身を除く): 28770476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2017, 2485, 4034, 4970, 8068, 9940, 10085, 14119, 20170, 28238, 40340, 56476, 70595, 141190, 143207, 282380, 286414, 572828, 716035, 1002449, 1432070, 2004898, 2864140, 4009796, 5012245, 10024490, 20048980]

約数ペア:

[(1, 20048980), (2, 10024490), (4, 5012245), (5, 4009796), (7, 2864140), (10, 2004898), (14, 1432070), (20, 1002449), (28, 716035), (35, 572828), (70, 286414), (71, 282380), (140, 143207), (142, 141190), (284, 70595), (355, 56476), (497, 40340), (710, 28238), (994, 20170), (1420, 14119), (1988, 10085), (2017, 9940), (2485, 8068), (4034, 4970)]