81652780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{1759}}^1$

素因数の和:1990

約数の個数: 48

約数和(自身を含む): 188052480

約数和(自身を除く): 106399700

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 211, 220, 422, 844, 1055, 1759, 2110, 2321, 3518, 4220, 4642, 7036, 8795, 9284, 11605, 17590, 19349, 23210, 35180, 38698, 46420, 77396, 96745, 193490, 371149, 386980, 742298, 1484596, 1855745, 3711490, 4082639, 7422980, 8165278, 16330556, 20413195, 40826390, 81652780]

約数ペア:

[(1, 81652780), (2, 40826390), (4, 20413195), (5, 16330556), (10, 8165278), (11, 7422980), (20, 4082639), (22, 3711490), (44, 1855745), (55, 1484596), (110, 742298), (211, 386980), (220, 371149), (422, 193490), (844, 96745), (1055, 77396), (1759, 46420), (2110, 38698), (2321, 35180), (3518, 23210), (4220, 19349), (4642, 17590), (7036, 11605), (8795, 9284)]