19006439420

素因数分解:

$2^2\times 5^1\times {\mathrm{950321971}}^1$

素因数の和:950321980

約数の個数: 12

約数和(自身を含む): 39913522824

約数和(自身を除く): 20907083404

約数列:

[1, 2, 4, 5, 10, 20, 950321971, 1900643942, 3801287884, 4751609855, 9503219710, 19006439420]

約数ペア:

[(1, 19006439420), (2, 9503219710), (4, 4751609855), (5, 3801287884), (10, 1900643942), (20, 950321971)]