21647145

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3581}}^1$

素因数の和:3633

約数の個数: 32

約数和(自身を含む): 38513664

約数和(自身を除く): 16866519

約数列:

[1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 195, 403, 465, 1209, 2015, 3581, 6045, 10743, 17905, 46553, 53715, 111011, 139659, 232765, 333033, 555055, 698295, 1443143, 1665165, 4329429, 7215715, 21647145]

約数ペア:

[(1, 21647145), (3, 7215715), (5, 4329429), (13, 1665165), (15, 1443143), (31, 698295), (39, 555055), (65, 333033), (93, 232765), (155, 139659), (195, 111011), (403, 53715), (465, 46553), (1209, 17905), (2015, 10743), (3581, 6045)]