21120975

素因数分解:

$3^2\times 5^2\times {\mathrm{93871}}^1$

素因数の和:93887

約数の個数: 18

約数和(自身を含む): 37830416

約数和(自身を除く): 16709441

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 93871, 281613, 469355, 844839, 1408065, 2346775, 4224195, 7040325, 21120975]

約数ペア:

[(1, 21120975), (3, 7040325), (5, 4224195), (9, 2346775), (15, 1408065), (25, 844839), (45, 469355), (75, 281613), (225, 93871)]