21103316

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6653}}^1$

素因数の和:6731

約数の個数: 24

約数和(自身を含む): 40429704

約数和(自身を除く): 19326388

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 6653, 13306, 26612, 86489, 172978, 345956, 405833, 811666, 1623332, 5275829, 10551658, 21103316]

約数ペア:

[(1, 21103316), (2, 10551658), (4, 5275829), (13, 1623332), (26, 811666), (52, 405833), (61, 345956), (122, 172978), (244, 86489), (793, 26612), (1586, 13306), (3172, 6653)]