21009225

素因数分解:

$3^1\times 5^2\times {\mathrm{373}}^1\times {\mathrm{751}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 34874752

約数和(自身を除く): 13865527

約数列:

[1, 3, 5, 15, 25, 75, 373, 751, 1119, 1865, 2253, 3755, 5595, 9325, 11265, 18775, 27975, 56325, 280123, 840369, 1400615, 4201845, 7003075, 21009225]

約数ペア:

[(1, 21009225), (3, 7003075), (5, 4201845), (15, 1400615), (25, 840369), (75, 280123), (373, 56325), (751, 27975), (1119, 18775), (1865, 11265), (2253, 9325), (3755, 5595)]