21109552

素因数分解:

$2^4\times {\mathrm{821}}^1\times {\mathrm{1607}}^1$

素因数の和:2436

約数の個数: 20

約数和(自身を含む): 40975056

約数和(自身を除く): 19865504

約数列:

[1, 2, 4, 8, 16, 821, 1607, 1642, 3214, 3284, 6428, 6568, 12856, 13136, 25712, 1319347, 2638694, 5277388, 10554776, 21109552]

約数ペア:

[(1, 21109552), (2, 10554776), (4, 5277388), (8, 2638694), (16, 1319347), (821, 25712), (1607, 13136), (1642, 12856), (3214, 6568), (3284, 6428)]