638119870

素因数分解:

$2^1\times 5^1\times {\mathrm{2027}}^1\times {\mathrm{31481}}^1$

素因数の和:33515

約数の個数: 16

約数和(自身を含む): 1149218928

約数和(自身を除く): 511099058

約数列:

[1, 2, 5, 10, 2027, 4054, 10135, 20270, 31481, 62962, 157405, 314810, 63811987, 127623974, 319059935, 638119870]

約数ペア:

[(1, 638119870), (2, 319059935), (5, 127623974), (10, 63811987), (2027, 314810), (4054, 157405), (10135, 62962), (20270, 31481)]