721397601

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{20771}}^1$

素因数の和:21021

約数の個数: 24

約数和(自身を含む): 1108227744

約数和(自身を除く): 386830143

約数列:

[1, 3, 9, 17, 51, 153, 227, 681, 2043, 3859, 11577, 20771, 34731, 62313, 186939, 353107, 1059321, 3177963, 4715017, 14145051, 42435153, 80155289, 240465867, 721397601]

約数ペア:

[(1, 721397601), (3, 240465867), (9, 80155289), (17, 42435153), (51, 14145051), (153, 4715017), (227, 3177963), (681, 1059321), (2043, 353107), (3859, 186939), (11577, 62313), (20771, 34731)]