21158475

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21701}}^1$

素因数の和:21727

約数の個数: 24

約数和(自身を含む): 37674672

約数和(自身を除く): 16516197

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21701, 65103, 108505, 282113, 325515, 542525, 846339, 1410565, 1627575, 4231695, 7052825, 21158475]

約数ペア:

[(1, 21158475), (3, 7052825), (5, 4231695), (13, 1627575), (15, 1410565), (25, 846339), (39, 542525), (65, 325515), (75, 282113), (195, 108505), (325, 65103), (975, 21701)]