210318125

素因数分解:

$5^4\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:327

約数の個数: 40

約数和(自身を含む): 281160000

約数和(自身を除く): 70841875

約数列:

[1, 5, 19, 25, 89, 95, 125, 199, 445, 475, 625, 995, 1691, 2225, 2375, 3781, 4975, 8455, 11125, 11875, 17711, 18905, 24875, 42275, 55625, 88555, 94525, 124375, 211375, 336509, 442775, 472625, 1056875, 1682545, 2213875, 2363125, 8412725, 11069375, 42063625, 210318125]

約数ペア:

[(1, 210318125), (5, 42063625), (19, 11069375), (25, 8412725), (89, 2363125), (95, 2213875), (125, 1682545), (199, 1056875), (445, 472625), (475, 442775), (625, 336509), (995, 211375), (1691, 124375), (2225, 94525), (2375, 88555), (3781, 55625), (4975, 42275), (8455, 24875), (11125, 18905), (11875, 17711)]