21968375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1229}}^1$

素因数の和:1268

約数の個数: 32

約数和(自身を含む): 32235840

約数和(自身を除く): 10267465

約数列:

[1, 5, 11, 13, 25, 55, 65, 125, 143, 275, 325, 715, 1229, 1375, 1625, 3575, 6145, 13519, 15977, 17875, 30725, 67595, 79885, 153625, 175747, 337975, 399425, 878735, 1689875, 1997125, 4393675, 21968375]

約数ペア:

[(1, 21968375), (5, 4393675), (11, 1997125), (13, 1689875), (25, 878735), (55, 399425), (65, 337975), (125, 175747), (143, 153625), (275, 79885), (325, 67595), (715, 30725), (1229, 17875), (1375, 15977), (1625, 13519), (3575, 6145)]