98492620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{499}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 211680000

約数和(自身を除く): 113187380

約数列:

[1, 2, 4, 5, 10, 20, 71, 139, 142, 278, 284, 355, 499, 556, 695, 710, 998, 1390, 1420, 1996, 2495, 2780, 4990, 9869, 9980, 19738, 35429, 39476, 49345, 69361, 70858, 98690, 138722, 141716, 177145, 197380, 277444, 346805, 354290, 693610, 708580, 1387220, 4924631, 9849262, 19698524, 24623155, 49246310, 98492620]

約数ペア:

[(1, 98492620), (2, 49246310), (4, 24623155), (5, 19698524), (10, 9849262), (20, 4924631), (71, 1387220), (139, 708580), (142, 693610), (278, 354290), (284, 346805), (355, 277444), (499, 197380), (556, 177145), (695, 141716), (710, 138722), (998, 98690), (1390, 70858), (1420, 69361), (1996, 49345), (2495, 39476), (2780, 35429), (4990, 19738), (9869, 9980)]