19722664

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2671}}^1$

素因数の和:2761

約数の個数: 32

約数和(自身を含む): 40400640

約数和(自身を除く): 20677976

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 104, 142, 284, 568, 923, 1846, 2671, 3692, 5342, 7384, 10684, 21368, 34723, 69446, 138892, 189641, 277784, 379282, 758564, 1517128, 2465333, 4930666, 9861332, 19722664]

約数ペア:

[(1, 19722664), (2, 9861332), (4, 4930666), (8, 2465333), (13, 1517128), (26, 758564), (52, 379282), (71, 277784), (104, 189641), (142, 138892), (284, 69446), (568, 34723), (923, 21368), (1846, 10684), (2671, 7384), (3692, 5342)]