666965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:380

約数の個数: 16

約数和(自身を含む): 892416

約数和(自身を除く): 225451

約数列:

[1, 5, 13, 31, 65, 155, 331, 403, 1655, 2015, 4303, 10261, 21515, 51305, 133393, 666965]

約数ペア:

[(1, 666965), (5, 133393), (13, 51305), (31, 21515), (65, 10261), (155, 4303), (331, 2015), (403, 1655)]