31220505

素因数分解:

$3^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{823}}^1$

素因数の和:1118

約数の個数: 32

約数和(自身を含む): 55768320

約数和(自身を除く): 24547815

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 281, 823, 843, 1405, 2469, 2529, 4115, 4215, 7407, 7587, 12345, 12645, 22221, 37035, 37935, 111105, 231263, 693789, 1156315, 2081367, 3468945, 6244101, 10406835, 31220505]

約数ペア:

[(1, 31220505), (3, 10406835), (5, 6244101), (9, 3468945), (15, 2081367), (27, 1156315), (45, 693789), (135, 231263), (281, 111105), (823, 37935), (843, 37035), (1405, 22221), (2469, 12645), (2529, 12345), (4115, 7587), (4215, 7407)]