81486665

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 110073600

約数和(自身を除く): 28586935

約数列:

[1, 5, 13, 29, 65, 139, 145, 311, 377, 695, 1555, 1807, 1885, 4031, 4043, 9019, 9035, 20155, 20215, 43229, 45095, 52403, 117247, 216145, 262015, 561977, 586235, 1253641, 2809885, 6268205, 16297333, 81486665]

約数ペア:

[(1, 81486665), (5, 16297333), (13, 6268205), (29, 2809885), (65, 1253641), (139, 586235), (145, 561977), (311, 262015), (377, 216145), (695, 117247), (1555, 52403), (1807, 45095), (1885, 43229), (4031, 20215), (4043, 20155), (9019, 9035)]