85998980

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{4339}}^1$

素因数の和:5339

約数の個数: 24

約数和(自身を含む): 180821760

約数和(自身を除く): 94822780

約数列:

[1, 2, 4, 5, 10, 20, 991, 1982, 3964, 4339, 4955, 8678, 9910, 17356, 19820, 21695, 43390, 86780, 4299949, 8599898, 17199796, 21499745, 42999490, 85998980]

約数ペア:

[(1, 85998980), (2, 42999490), (4, 21499745), (5, 17199796), (10, 8599898), (20, 4299949), (991, 86780), (1982, 43390), (3964, 21695), (4339, 19820), (4955, 17356), (8678, 9910)]