18657925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 28873152

約数和(自身を除く): 10215227

約数列:

[1, 5, 11, 13, 17, 25, 55, 65, 85, 143, 187, 221, 275, 307, 325, 425, 715, 935, 1105, 1535, 2431, 3377, 3575, 3991, 4675, 5219, 5525, 7675, 12155, 16885, 19955, 26095, 43901, 57409, 60775, 67847, 84425, 99775, 130475, 219505, 287045, 339235, 746317, 1097525, 1435225, 1696175, 3731585, 18657925]

約数ペア:

[(1, 18657925), (5, 3731585), (11, 1696175), (13, 1435225), (17, 1097525), (25, 746317), (55, 339235), (65, 287045), (85, 219505), (143, 130475), (187, 99775), (221, 84425), (275, 67847), (307, 60775), (325, 57409), (425, 43901), (715, 26095), (935, 19955), (1105, 16885), (1535, 12155), (2431, 7675), (3377, 5525), (3575, 5219), (3991, 4675)]