251505

素因数分解:

$3^7\times 5^1\times {\mathrm{23}}^1$

素因数の和:49

約数の個数: 32

約数和(自身を含む): 472320

約数和(自身を除く): 220815

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 243, 345, 405, 621, 729, 1035, 1215, 1863, 2187, 3105, 3645, 5589, 9315, 10935, 16767, 27945, 50301, 83835, 251505]

約数ペア:

[(1, 251505), (3, 83835), (5, 50301), (9, 27945), (15, 16767), (23, 10935), (27, 9315), (45, 5589), (69, 3645), (81, 3105), (115, 2187), (135, 1863), (207, 1215), (243, 1035), (345, 729), (405, 621)]