21495409

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:169

約数の個数: 32

約数和(自身を含む): 26046720

約数和(自身を除く): 4551311

約数列:

[1, 13, 23, 29, 37, 67, 299, 377, 481, 667, 851, 871, 1073, 1541, 1943, 2479, 8671, 11063, 13949, 20033, 24679, 25259, 32227, 44689, 57017, 71891, 320827, 580957, 741221, 934583, 1653493, 21495409]

約数ペア:

[(1, 21495409), (13, 1653493), (23, 934583), (29, 741221), (37, 580957), (67, 320827), (299, 71891), (377, 57017), (481, 44689), (667, 32227), (851, 25259), (871, 24679), (1073, 20033), (1541, 13949), (1943, 11063), (2479, 8671)]