1640541680

素因数分解:

$2^4\times 5^1\times {\mathrm{20506771}}^1$

素因数の和:20506784

約数の個数: 20

約数和(自身を含む): 3814259592

約数和(自身を除く): 2173717912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20506771, 41013542, 82027084, 102533855, 164054168, 205067710, 328108336, 410135420, 820270840, 1640541680]

約数ペア:

[(1, 1640541680), (2, 820270840), (4, 410135420), (5, 328108336), (8, 205067710), (10, 164054168), (16, 102533855), (20, 82027084), (40, 41013542), (80, 20506771)]