20918219878

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{577}}^1\times {\mathrm{489911}}^1$

素因数の和:490527

約数の個数: 16

約数和(自身を含む): 32281281504

約数和(自身を除く): 11363061626

約数列:

[1, 2, 37, 74, 577, 1154, 21349, 42698, 489911, 979822, 18126707, 36253414, 282678647, 565357294, 10459109939, 20918219878]

約数ペア:

[(1, 20918219878), (2, 10459109939), (37, 565357294), (74, 282678647), (577, 36253414), (1154, 18126707), (21349, 979822), (42698, 489911)]