20018205

素因数分解:

$3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1877}}^1$

素因数の和:1970

約数の個数: 32

約数和(自身を含む): 36057600

約数和(自身を除く): 16039395

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 135, 237, 395, 711, 1185, 1877, 2133, 3555, 5631, 9385, 10665, 16893, 28155, 50679, 84465, 148283, 253395, 444849, 741415, 1334547, 2224245, 4003641, 6672735, 20018205]

約数ペア:

[(1, 20018205), (3, 6672735), (5, 4003641), (9, 2224245), (15, 1334547), (27, 741415), (45, 444849), (79, 253395), (135, 148283), (237, 84465), (395, 50679), (711, 28155), (1185, 16893), (1877, 10665), (2133, 9385), (3555, 5631)]