21722240

素因数分解:

$2^7\times 5^1\times {\mathrm{33941}}^1$

素因数の和:33960

約数の個数: 32

約数和(自身を含む): 51931260

約数和(自身を除く): 30209020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33941, 67882, 135764, 169705, 271528, 339410, 543056, 678820, 1086112, 1357640, 2172224, 2715280, 4344448, 5430560, 10861120, 21722240]

約数ペア:

[(1, 21722240), (2, 10861120), (4, 5430560), (5, 4344448), (8, 2715280), (10, 2172224), (16, 1357640), (20, 1086112), (32, 678820), (40, 543056), (64, 339410), (80, 271528), (128, 169705), (160, 135764), (320, 67882), (640, 33941)]