20015235

素因数分解:

$3^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{857}}^1$

素因数の和:1044

約数の個数: 32

約数和(自身を含む): 35830080

約数和(自身を除く): 15814845

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 173, 519, 857, 865, 1557, 2571, 2595, 4285, 4671, 7713, 7785, 12855, 23139, 23355, 38565, 115695, 148261, 444783, 741305, 1334349, 2223915, 4003047, 6671745, 20015235]

約数ペア:

[(1, 20015235), (3, 6671745), (5, 4003047), (9, 2223915), (15, 1334349), (27, 741305), (45, 444783), (135, 148261), (173, 115695), (519, 38565), (857, 23355), (865, 23139), (1557, 12855), (2571, 7785), (2595, 7713), (4285, 4671)]