21345808

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{121283}}^1$

素因数の和:121302

約数の個数: 20

約数和(自身を含む): 45117648

約数和(自身を除く): 23771840

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121283, 242566, 485132, 970264, 1334113, 1940528, 2668226, 5336452, 10672904, 21345808]

約数ペア:

[(1, 21345808), (2, 10672904), (4, 5336452), (8, 2668226), (11, 1940528), (16, 1334113), (22, 970264), (44, 485132), (88, 242566), (176, 121283)]