20457830

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{65993}}^1$

素因数の和:66031

約数の個数: 16

約数和(自身を含む): 38012544

約数和(自身を除く): 17554714

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 65993, 131986, 329965, 659930, 2045783, 4091566, 10228915, 20457830]

約数ペア:

[(1, 20457830), (2, 10228915), (5, 4091566), (10, 2045783), (31, 659930), (62, 329965), (155, 131986), (310, 65993)]