201621580

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{28081}}^1$

素因数の和:28449

約数の個数: 24

約数和(自身を含む): 424599840

約数和(自身を除く): 222978260

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 3590, 7180, 28081, 56162, 112324, 140405, 280810, 561620, 10081079, 20162158, 40324316, 50405395, 100810790, 201621580]

約数ペア:

[(1, 201621580), (2, 100810790), (4, 50405395), (5, 40324316), (10, 20162158), (20, 10081079), (359, 561620), (718, 280810), (1436, 140405), (1795, 112324), (3590, 56162), (7180, 28081)]