19815795

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{25903}}^1$

素因数の和:25931

約数の個数: 24

約数和(自身を含む): 36369216

約数和(自身を除く): 16553421

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 25903, 77709, 129515, 233127, 388545, 440351, 1165635, 1321053, 2201755, 3963159, 6605265, 19815795]

約数ペア:

[(1, 19815795), (3, 6605265), (5, 3963159), (9, 2201755), (15, 1321053), (17, 1165635), (45, 440351), (51, 388545), (85, 233127), (153, 129515), (255, 77709), (765, 25903)]