21221686071

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{499}}^1\times {\mathrm{42571}}^1$

素因数の和:43116

約数の個数: 32

約数和(自身を含む): 32354720000

約数和(自身を除く): 11133033929

約数列:

[1, 3, 9, 27, 37, 111, 333, 499, 999, 1497, 4491, 13473, 18463, 42571, 55389, 127713, 166167, 383139, 498501, 1149417, 1575127, 4725381, 14176143, 21242929, 42528429, 63728787, 191186361, 573559083, 785988373, 2357965119, 7073895357, 21221686071]

約数ペア:

[(1, 21221686071), (3, 7073895357), (9, 2357965119), (27, 785988373), (37, 573559083), (111, 191186361), (333, 63728787), (499, 42528429), (999, 21242929), (1497, 14176143), (4491, 4725381), (13473, 1575127), (18463, 1149417), (42571, 498501), (55389, 383139), (127713, 166167)]