21515360

素因数分解:

$2^5\times 5^1\times {\mathrm{134471}}^1$

素因数の和:134486

約数の個数: 24

約数和(自身を含む): 50830416

約数和(自身を除く): 29315056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 134471, 268942, 537884, 672355, 1075768, 1344710, 2151536, 2689420, 4303072, 5378840, 10757680, 21515360]

約数ペア:

[(1, 21515360), (2, 10757680), (4, 5378840), (5, 4303072), (8, 2689420), (10, 2151536), (16, 1344710), (20, 1075768), (32, 672355), (40, 537884), (80, 268942), (160, 134471)]