21440432

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103079}}^1$

素因数の和:103100

約数の個数: 20

約数和(自身を含む): 44736720

約数和(自身を除く): 23296288

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103079, 206158, 412316, 824632, 1340027, 1649264, 2680054, 5360108, 10720216, 21440432]

約数ペア:

[(1, 21440432), (2, 10720216), (4, 5360108), (8, 2680054), (13, 1649264), (16, 1340027), (26, 824632), (52, 412316), (104, 206158), (208, 103079)]