21369765

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{463}}^1$

素因数の和:669

約数の個数: 32

約数和(自身を含む): 36481536

約数和(自身を除く): 15111771

約数列:

[1, 3, 5, 15, 17, 51, 85, 181, 255, 463, 543, 905, 1389, 2315, 2715, 3077, 6945, 7871, 9231, 15385, 23613, 39355, 46155, 83803, 118065, 251409, 419015, 1257045, 1424651, 4273953, 7123255, 21369765]

約数ペア:

[(1, 21369765), (3, 7123255), (5, 4273953), (15, 1424651), (17, 1257045), (51, 419015), (85, 251409), (181, 118065), (255, 83803), (463, 46155), (543, 39355), (905, 23613), (1389, 15385), (2315, 9231), (2715, 7871), (3077, 6945)]