498379340

素因数分解:

$2^2\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{12541}}^1$

素因数の和:14537

約数の個数: 24

約数和(自身を含む): 1047206832

約数和(自身を除く): 548827492

約数列:

[1, 2, 4, 5, 10, 20, 1987, 3974, 7948, 9935, 12541, 19870, 25082, 39740, 50164, 62705, 125410, 250820, 24918967, 49837934, 99675868, 124594835, 249189670, 498379340]

約数ペア:

[(1, 498379340), (2, 249189670), (4, 124594835), (5, 99675868), (10, 49837934), (20, 24918967), (1987, 250820), (3974, 125410), (7948, 62705), (9935, 50164), (12541, 39740), (19870, 25082)]