21695825

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:817

約数の個数: 24

約数和(自身を含む): 28926720

約数和(自身を除く): 7230895

約数列:

[1, 5, 17, 25, 71, 85, 355, 425, 719, 1207, 1775, 3595, 6035, 12223, 17975, 30175, 51049, 61115, 255245, 305575, 867833, 1276225, 4339165, 21695825]

約数ペア:

[(1, 21695825), (5, 4339165), (17, 1276225), (25, 867833), (71, 305575), (85, 255245), (355, 61115), (425, 51049), (719, 30175), (1207, 17975), (1775, 12223), (3595, 6035)]