18668125

素因数分解:

$5^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1$

素因数の和:295

約数の個数: 40

約数和(自身を含む): 28340928

約数和(自身を除く): 9672803

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 125, 175, 251, 425, 595, 625, 875, 1255, 1757, 2125, 2975, 4267, 4375, 6275, 8785, 10625, 14875, 21335, 29869, 31375, 43925, 74375, 106675, 149345, 156875, 219625, 533375, 746725, 1098125, 2666875, 3733625, 18668125]

約数ペア:

[(1, 18668125), (5, 3733625), (7, 2666875), (17, 1098125), (25, 746725), (35, 533375), (85, 219625), (119, 156875), (125, 149345), (175, 106675), (251, 74375), (425, 43925), (595, 31375), (625, 29869), (875, 21335), (1255, 14875), (1757, 10625), (2125, 8785), (2975, 6275), (4267, 4375)]