21275475

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21821}}^1$

素因数の和:21847

約数の個数: 24

約数和(自身を含む): 37882992

約数和(自身を除く): 16607517

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21821, 65463, 109105, 283673, 327315, 545525, 851019, 1418365, 1636575, 4255095, 7091825, 21275475]

約数ペア:

[(1, 21275475), (3, 7091825), (5, 4255095), (13, 1636575), (15, 1418365), (25, 851019), (39, 545525), (65, 327315), (75, 283673), (195, 109105), (325, 65463), (975, 21821)]