21272655

素因数分解:

$3^1\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1753}}^1$

素因数の和:2570

約数の個数: 16

約数和(自身を含む): 34097760

約数和(自身を除く): 12825105

約数列:

[1, 3, 5, 15, 809, 1753, 2427, 4045, 5259, 8765, 12135, 26295, 1418177, 4254531, 7090885, 21272655]

約数ペア:

[(1, 21272655), (3, 7090885), (5, 4254531), (15, 1418177), (809, 26295), (1753, 12135), (2427, 8765), (4045, 5259)]