19721475

素因数分解:

$3^4\times 5^2\times {\mathrm{9739}}^1$

素因数の和:9761

約数の個数: 30

約数和(自身を含む): 36534740

約数和(自身を除く): 16813265

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 9739, 29217, 48695, 87651, 146085, 243475, 262953, 438255, 730425, 788859, 1314765, 2191275, 3944295, 6573825, 19721475]

約数ペア:

[(1, 19721475), (3, 6573825), (5, 3944295), (9, 2191275), (15, 1314765), (25, 788859), (27, 730425), (45, 438255), (75, 262953), (81, 243475), (135, 146085), (225, 87651), (405, 48695), (675, 29217), (2025, 9739)]