19911825

素因数分解:

$3^4\times 5^2\times {\mathrm{9833}}^1$

素因数の和:9855

約数の個数: 30

約数和(自身を含む): 36887334

約数和(自身を除く): 16975509

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 9833, 29499, 49165, 88497, 147495, 245825, 265491, 442485, 737475, 796473, 1327455, 2212425, 3982365, 6637275, 19911825]

約数ペア:

[(1, 19911825), (3, 6637275), (5, 3982365), (9, 2212425), (15, 1327455), (25, 796473), (27, 737475), (45, 442485), (75, 265491), (81, 245825), (135, 147495), (225, 88497), (405, 49165), (675, 29499), (2025, 9833)]