20959910

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:688

約数の個数: 32

約数和(自身を含む): 39051072

約数和(自身を除く): 18091162

約数列:

[1, 2, 5, 10, 53, 71, 106, 142, 265, 355, 530, 557, 710, 1114, 2785, 3763, 5570, 7526, 18815, 29521, 37630, 39547, 59042, 79094, 147605, 197735, 295210, 395470, 2095991, 4191982, 10479955, 20959910]

約数ペア:

[(1, 20959910), (2, 10479955), (5, 4191982), (10, 2095991), (53, 395470), (71, 295210), (106, 197735), (142, 147605), (265, 79094), (355, 59042), (530, 39547), (557, 37630), (710, 29521), (1114, 18815), (2785, 7526), (3763, 5570)]