20398935

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^2\times {\mathrm{809}}^1$

素因数の和:899

約数の個数: 24

約数和(自身を含む): 33495120

約数和(自身を除く): 13096185

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 809, 1681, 2427, 4045, 5043, 8405, 12135, 25215, 33169, 99507, 165845, 497535, 1359929, 4079787, 6799645, 20398935]

約数ペア:

[(1, 20398935), (3, 6799645), (5, 4079787), (15, 1359929), (41, 497535), (123, 165845), (205, 99507), (615, 33169), (809, 25215), (1681, 12135), (2427, 8405), (4045, 5043)]