19541665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 27885312

約数和(自身を除く): 8343647

約数列:

[1, 5, 11, 13, 55, 65, 143, 151, 181, 715, 755, 905, 1661, 1963, 1991, 2353, 8305, 9815, 9955, 11765, 21593, 25883, 27331, 107965, 129415, 136655, 300641, 355303, 1503205, 1776515, 3908333, 19541665]

約数ペア:

[(1, 19541665), (5, 3908333), (11, 1776515), (13, 1503205), (55, 355303), (65, 300641), (143, 136655), (151, 129415), (181, 107965), (715, 27331), (755, 25883), (905, 21593), (1661, 11765), (1963, 9955), (1991, 9815), (2353, 8305)]