18709405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 26707968

約数和(自身を除く): 7998563

約数列:

[1, 5, 11, 13, 55, 65, 137, 143, 191, 685, 715, 955, 1507, 1781, 2101, 2483, 7535, 8905, 10505, 12415, 19591, 26167, 27313, 97955, 130835, 136565, 287837, 340171, 1439185, 1700855, 3741881, 18709405]

約数ペア:

[(1, 18709405), (5, 3741881), (11, 1700855), (13, 1439185), (55, 340171), (65, 287837), (137, 136565), (143, 130835), (191, 97955), (685, 27313), (715, 26167), (955, 19591), (1507, 12415), (1781, 10505), (2101, 8905), (2483, 7535)]