20480409

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{599}}^1$

素因数の和:765

約数の個数: 24

約数和(自身を含む): 30888000

約数和(自身を除く): 10407591

約数列:

[1, 3, 9, 29, 87, 131, 261, 393, 599, 1179, 1797, 3799, 5391, 11397, 17371, 34191, 52113, 78469, 156339, 235407, 706221, 2275601, 6826803, 20480409]

約数ペア:

[(1, 20480409), (3, 6826803), (9, 2275601), (29, 706221), (87, 235407), (131, 156339), (261, 78469), (393, 52113), (599, 34191), (1179, 17371), (1797, 11397), (3799, 5391)]