21856575

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{773}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 40309920

約数和(自身を除く): 18453345

約数列:

[1, 3, 5, 13, 15, 25, 29, 39, 65, 75, 87, 145, 195, 325, 377, 435, 725, 773, 975, 1131, 1885, 2175, 2319, 3865, 5655, 9425, 10049, 11595, 19325, 22417, 28275, 30147, 50245, 57975, 67251, 112085, 150735, 251225, 291421, 336255, 560425, 753675, 874263, 1457105, 1681275, 4371315, 7285525, 21856575]

約数ペア:

[(1, 21856575), (3, 7285525), (5, 4371315), (13, 1681275), (15, 1457105), (25, 874263), (29, 753675), (39, 560425), (65, 336255), (75, 291421), (87, 251225), (145, 150735), (195, 112085), (325, 67251), (377, 57975), (435, 50245), (725, 30147), (773, 28275), (975, 22417), (1131, 19325), (1885, 11595), (2175, 10049), (2319, 9425), (3865, 5655)]