20578420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33191}}^1$

素因数の和:33231

約数の個数: 24

約数和(自身を含む): 44610048

約数和(自身を除く): 24031628

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33191, 66382, 132764, 165955, 331910, 663820, 1028921, 2057842, 4115684, 5144605, 10289210, 20578420]

約数ペア:

[(1, 20578420), (2, 10289210), (4, 5144605), (5, 4115684), (10, 2057842), (20, 1028921), (31, 663820), (62, 331910), (124, 165955), (155, 132764), (310, 66382), (620, 33191)]