18906425

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{751}}^1$

素因数の和:833

約数の個数: 24

約数和(自身を含む): 25176960

約数和(自身を除く): 6270535

約数列:

[1, 5, 19, 25, 53, 95, 265, 475, 751, 1007, 1325, 3755, 5035, 14269, 18775, 25175, 39803, 71345, 199015, 356725, 756257, 995075, 3781285, 18906425]

約数ペア:

[(1, 18906425), (5, 3781285), (19, 995075), (25, 756257), (53, 356725), (95, 199015), (265, 71345), (475, 39803), (751, 25175), (1007, 18775), (1325, 14269), (3755, 5035)]