21405345

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3541}}^1$

素因数の和:3593

約数の個数: 32

約数和(自身を含む): 38083584

約数和(自身を除く): 16678239

約数列:

[1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 195, 403, 465, 1209, 2015, 3541, 6045, 10623, 17705, 46033, 53115, 109771, 138099, 230165, 329313, 548855, 690495, 1427023, 1646565, 4281069, 7135115, 21405345]

約数ペア:

[(1, 21405345), (3, 7135115), (5, 4281069), (13, 1646565), (15, 1427023), (31, 690495), (39, 548855), (65, 329313), (93, 230165), (155, 138099), (195, 109771), (403, 53115), (465, 46033), (1209, 17705), (2015, 10623), (3541, 6045)]