21735855

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 39536640

約数和(自身を除く): 17800785

約数列:

[1, 3, 5, 9, 15, 43, 45, 47, 129, 141, 215, 235, 239, 387, 423, 645, 705, 717, 1195, 1935, 2021, 2115, 2151, 3585, 6063, 10105, 10277, 10755, 11233, 18189, 30315, 30831, 33699, 51385, 56165, 90945, 92493, 101097, 154155, 168495, 462465, 483019, 505485, 1449057, 2415095, 4347171, 7245285, 21735855]

約数ペア:

[(1, 21735855), (3, 7245285), (5, 4347171), (9, 2415095), (15, 1449057), (43, 505485), (45, 483019), (47, 462465), (129, 168495), (141, 154155), (215, 101097), (235, 92493), (239, 90945), (387, 56165), (423, 51385), (645, 33699), (705, 30831), (717, 30315), (1195, 18189), (1935, 11233), (2021, 10755), (2115, 10277), (2151, 10105), (3585, 6063)]