20819826

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{727}}^1$

素因数の和:815

約数の個数: 48

約数和(自身を含む): 47471424

約数和(自身を除く): 26651598

約数列:

[1, 2, 3, 6, 9, 18, 37, 43, 74, 86, 111, 129, 222, 258, 333, 387, 666, 727, 774, 1454, 1591, 2181, 3182, 4362, 4773, 6543, 9546, 13086, 14319, 26899, 28638, 31261, 53798, 62522, 80697, 93783, 161394, 187566, 242091, 281349, 484182, 562698, 1156657, 2313314, 3469971, 6939942, 10409913, 20819826]

約数ペア:

[(1, 20819826), (2, 10409913), (3, 6939942), (6, 3469971), (9, 2313314), (18, 1156657), (37, 562698), (43, 484182), (74, 281349), (86, 242091), (111, 187566), (129, 161394), (222, 93783), (258, 80697), (333, 62522), (387, 53798), (666, 31261), (727, 28638), (774, 26899), (1454, 14319), (1591, 13086), (2181, 9546), (3182, 6543), (4362, 4773)]