90388180

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{21419}}^1$

素因数の和:21639

約数の個数: 24

約数和(自身を含む): 190723680

約数和(自身を除く): 100335500

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 21419, 42838, 85676, 107095, 214190, 428380, 4519409, 9038818, 18077636, 22597045, 45194090, 90388180]

約数ペア:

[(1, 90388180), (2, 45194090), (4, 22597045), (5, 18077636), (10, 9038818), (20, 4519409), (211, 428380), (422, 214190), (844, 107095), (1055, 85676), (2110, 42838), (4220, 21419)]