31397457

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2447}}^1$

素因数の和:2517

約数の個数: 32

約数和(自身を含む): 52641792

約数和(自身を除く): 21244335

約数列:

[1, 3, 7, 13, 21, 39, 47, 91, 141, 273, 329, 611, 987, 1833, 2447, 4277, 7341, 12831, 17129, 31811, 51387, 95433, 115009, 222677, 345027, 668031, 805063, 1495117, 2415189, 4485351, 10465819, 31397457]

約数ペア:

[(1, 31397457), (3, 10465819), (7, 4485351), (13, 2415189), (21, 1495117), (39, 805063), (47, 668031), (91, 345027), (141, 222677), (273, 115009), (329, 95433), (611, 51387), (987, 31811), (1833, 17129), (2447, 12831), (4277, 7341)]