21550330

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{557}}^1$

素因数の和:690

約数の個数: 32

約数和(自身を含む): 40135824

約数和(自身を除く): 18585494

約数列:

[1, 2, 5, 10, 53, 73, 106, 146, 265, 365, 530, 557, 730, 1114, 2785, 3869, 5570, 7738, 19345, 29521, 38690, 40661, 59042, 81322, 147605, 203305, 295210, 406610, 2155033, 4310066, 10775165, 21550330]

約数ペア:

[(1, 21550330), (2, 10775165), (5, 4310066), (10, 2155033), (53, 406610), (73, 295210), (106, 203305), (146, 147605), (265, 81322), (365, 59042), (530, 40661), (557, 38690), (730, 29521), (1114, 19345), (2785, 7738), (3869, 5570)]