280771875

素因数分解:

$3^2\times 5^5\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 517935600

約数和(自身を除く): 237163725

約数列:

[1, 3, 5, 9, 15, 25, 45, 67, 75, 125, 149, 201, 225, 335, 375, 447, 603, 625, 745, 1005, 1125, 1341, 1675, 1875, 2235, 3015, 3125, 3725, 5025, 5625, 6705, 8375, 9375, 9983, 11175, 15075, 18625, 25125, 28125, 29949, 33525, 41875, 49915, 55875, 75375, 89847, 93125, 125625, 149745, 167625, 209375, 249575, 279375, 376875, 449235, 465625, 628125, 748725, 838125, 1247875, 1396875, 1884375, 2246175, 3743625, 4190625, 6239375, 11230875, 18718125, 31196875, 56154375, 93590625, 280771875]

約数ペア:

[(1, 280771875), (3, 93590625), (5, 56154375), (9, 31196875), (15, 18718125), (25, 11230875), (45, 6239375), (67, 4190625), (75, 3743625), (125, 2246175), (149, 1884375), (201, 1396875), (225, 1247875), (335, 838125), (375, 748725), (447, 628125), (603, 465625), (625, 449235), (745, 376875), (1005, 279375), (1125, 249575), (1341, 209375), (1675, 167625), (1875, 149745), (2235, 125625), (3015, 93125), (3125, 89847), (3725, 75375), (5025, 55875), (5625, 49915), (6705, 41875), (8375, 33525), (9375, 29949), (9983, 28125), (11175, 25125), (15075, 18625)]