21522885

素因数分解:

$3^1\times 5^1\times {\mathrm{1039}}^1\times {\mathrm{1381}}^1$

素因数の和:2428

約数の個数: 16

約数和(自身を含む): 34494720

約数和(自身を除く): 12971835

約数列:

[1, 3, 5, 15, 1039, 1381, 3117, 4143, 5195, 6905, 15585, 20715, 1434859, 4304577, 7174295, 21522885]

約数ペア:

[(1, 21522885), (3, 7174295), (5, 4304577), (15, 1434859), (1039, 20715), (1381, 15585), (3117, 6905), (4143, 5195)]