31278825

素因数分解:

$3^3\times 5^2\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:479

約数の個数: 48

約数和(自身を含む): 58032000

約数和(自身を除く): 26753175

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 149, 225, 311, 447, 675, 745, 933, 1341, 1555, 2235, 2799, 3725, 4023, 4665, 6705, 7775, 8397, 11175, 13995, 20115, 23325, 33525, 41985, 46339, 69975, 100575, 139017, 209925, 231695, 417051, 695085, 1158475, 1251153, 2085255, 3475425, 6255765, 10426275, 31278825]

約数ペア:

[(1, 31278825), (3, 10426275), (5, 6255765), (9, 3475425), (15, 2085255), (25, 1251153), (27, 1158475), (45, 695085), (75, 417051), (135, 231695), (149, 209925), (225, 139017), (311, 100575), (447, 69975), (675, 46339), (745, 41985), (933, 33525), (1341, 23325), (1555, 20115), (2235, 13995), (2799, 11175), (3725, 8397), (4023, 7775), (4665, 6705)]