21821769

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{499}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 32604000

約数和(自身を除く): 10782231

約数列:

[1, 3, 9, 43, 113, 129, 339, 387, 499, 1017, 1497, 4491, 4859, 14577, 21457, 43731, 56387, 64371, 169161, 193113, 507483, 2424641, 7273923, 21821769]

約数ペア:

[(1, 21821769), (3, 7273923), (9, 2424641), (43, 507483), (113, 193113), (129, 169161), (339, 64371), (387, 56387), (499, 43731), (1017, 21457), (1497, 14577), (4491, 4859)]