21257175

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{12323}}^1$

素因数の和:12359

約数の個数: 24

約数和(自身を含む): 36676224

約数和(自身を除く): 15419049

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 12323, 36969, 61615, 184845, 283429, 308075, 850287, 924225, 1417145, 4251435, 7085725, 21257175]

約数ペア:

[(1, 21257175), (3, 7085725), (5, 4251435), (15, 1417145), (23, 924225), (25, 850287), (69, 308075), (75, 283429), (115, 184845), (345, 61615), (575, 36969), (1725, 12323)]