221421310

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{28351}}^1$

素因数の和:28440

約数の個数: 32

約数和(自身を含む): 440930304

約数和(自身を除く): 219508994

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 3905, 7810, 28351, 56702, 141755, 283510, 311861, 623722, 1559305, 2012921, 3118610, 4025842, 10064605, 20129210, 22142131, 44284262, 110710655, 221421310]

約数ペア:

[(1, 221421310), (2, 110710655), (5, 44284262), (10, 22142131), (11, 20129210), (22, 10064605), (55, 4025842), (71, 3118610), (110, 2012921), (142, 1559305), (355, 623722), (710, 311861), (781, 283510), (1562, 141755), (3905, 56702), (7810, 28351)]