20697465

素因数分解:

$3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{12659}}^1$

素因数の和:12776

約数の個数: 16

約数和(自身を含む): 33422400

約数和(自身を除く): 12724935

約数列:

[1, 3, 5, 15, 109, 327, 545, 1635, 12659, 37977, 63295, 189885, 1379831, 4139493, 6899155, 20697465]

約数ペア:

[(1, 20697465), (3, 6899155), (5, 4139493), (15, 1379831), (109, 189885), (327, 63295), (545, 37977), (1635, 12659)]