21281408

素因数分解:

$2^7\times {\mathrm{53}}^1\times {\mathrm{3137}}^1$

素因数の和:3204

約数の個数: 32

約数和(自身を含む): 43210260

約数和(自身を除く): 21928852

約数列:

[1, 2, 4, 8, 16, 32, 53, 64, 106, 128, 212, 424, 848, 1696, 3137, 3392, 6274, 6784, 12548, 25096, 50192, 100384, 166261, 200768, 332522, 401536, 665044, 1330088, 2660176, 5320352, 10640704, 21281408]

約数ペア:

[(1, 21281408), (2, 10640704), (4, 5320352), (8, 2660176), (16, 1330088), (32, 665044), (53, 401536), (64, 332522), (106, 200768), (128, 166261), (212, 100384), (424, 50192), (848, 25096), (1696, 12548), (3137, 6784), (3392, 6274)]