18915855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3833}}^1$

素因数の和:3895

約数の個数: 32

約数和(自身を含む): 35334144

約数和(自身を除く): 16418289

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 105, 141, 235, 329, 705, 987, 1645, 3833, 4935, 11499, 19165, 26831, 57495, 80493, 134155, 180151, 402465, 540453, 900755, 1261057, 2702265, 3783171, 6305285, 18915855]

約数ペア:

[(1, 18915855), (3, 6305285), (5, 3783171), (7, 2702265), (15, 1261057), (21, 900755), (35, 540453), (47, 402465), (105, 180151), (141, 134155), (235, 80493), (329, 57495), (705, 26831), (987, 19165), (1645, 11499), (3833, 4935)]