21013875

素因数分解:

$3^2\times 5^3\times {\mathrm{18679}}^1$

素因数の和:18700

約数の個数: 24

約数和(自身を含む): 37883040

約数和(自身を除く): 16869165

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125, 18679, 56037, 93395, 168111, 280185, 466975, 840555, 1400925, 2334875, 4202775, 7004625, 21013875]

約数ペア:

[(1, 21013875), (3, 7004625), (5, 4202775), (9, 2334875), (15, 1400925), (25, 840555), (45, 466975), (75, 280185), (125, 168111), (225, 93395), (375, 56037), (1125, 18679)]