21370240

素因数分解:

$2^7\times 5^1\times {\mathrm{33391}}^1$

素因数の和:33410

約数の個数: 32

約数和(自身を含む): 51089760

約数和(自身を除く): 29719520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33391, 66782, 133564, 166955, 267128, 333910, 534256, 667820, 1068512, 1335640, 2137024, 2671280, 4274048, 5342560, 10685120, 21370240]

約数ペア:

[(1, 21370240), (2, 10685120), (4, 5342560), (5, 4274048), (8, 2671280), (10, 2137024), (16, 1335640), (20, 1068512), (32, 667820), (40, 534256), (64, 333910), (80, 267128), (128, 166955), (160, 133564), (320, 66782), (640, 33391)]