18718125

素因数分解:

$3^1\times 5^4\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:239

約数の個数: 40

約数和(自身を含む): 31864800

約数和(自身を除く): 13146675

約数列:

[1, 3, 5, 15, 25, 67, 75, 125, 149, 201, 335, 375, 447, 625, 745, 1005, 1675, 1875, 2235, 3725, 5025, 8375, 9983, 11175, 18625, 25125, 29949, 41875, 49915, 55875, 93125, 125625, 149745, 249575, 279375, 748725, 1247875, 3743625, 6239375, 18718125]

約数ペア:

[(1, 18718125), (3, 6239375), (5, 3743625), (15, 1247875), (25, 748725), (67, 279375), (75, 249575), (125, 149745), (149, 125625), (201, 93125), (335, 55875), (375, 49915), (447, 41875), (625, 29949), (745, 25125), (1005, 18625), (1675, 11175), (1875, 9983), (2235, 8375), (3725, 5025)]