21408435

素因数分解:

$3^3\times 5^1\times {\mathrm{158581}}^1$

素因数の和:158595

約数の個数: 16

約数和(自身を含む): 38059680

約数和(自身を除く): 16651245

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 158581, 475743, 792905, 1427229, 2378715, 4281687, 7136145, 21408435]

約数ペア:

[(1, 21408435), (3, 7136145), (5, 4281687), (9, 2378715), (15, 1427229), (27, 792905), (45, 475743), (135, 158581)]