1998650

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{563}}^1$

素因数の和:646

約数の個数: 24

約数和(自身を含む): 3776544

約数和(自身を除く): 1777894

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 563, 710, 1126, 1775, 2815, 3550, 5630, 14075, 28150, 39973, 79946, 199865, 399730, 999325, 1998650]

約数ペア:

[(1, 1998650), (2, 999325), (5, 399730), (10, 199865), (25, 79946), (50, 39973), (71, 28150), (142, 14075), (355, 5630), (563, 3550), (710, 2815), (1126, 1775)]