21408592

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70423}}^1$

素因数の和:70450

約数の個数: 20

約数和(自身を含む): 43662880

約数和(自身を除く): 22254288

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70423, 140846, 281692, 563384, 1126768, 1338037, 2676074, 5352148, 10704296, 21408592]

約数ペア:

[(1, 21408592), (2, 10704296), (4, 5352148), (8, 2676074), (16, 1338037), (19, 1126768), (38, 563384), (76, 281692), (152, 140846), (304, 70423)]