18386870

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:173

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 18937930

約数列:

[1, 2, 5, 10, 19, 29, 38, 47, 58, 71, 94, 95, 142, 145, 190, 235, 290, 355, 470, 551, 710, 893, 1102, 1349, 1363, 1786, 2059, 2698, 2726, 2755, 3337, 4118, 4465, 5510, 6674, 6745, 6815, 8930, 10295, 13490, 13630, 16685, 20590, 25897, 33370, 39121, 51794, 63403, 78242, 96773, 126806, 129485, 193546, 195605, 258970, 317015, 391210, 483865, 634030, 967730, 1838687, 3677374, 9193435, 18386870]

約数ペア:

[(1, 18386870), (2, 9193435), (5, 3677374), (10, 1838687), (19, 967730), (29, 634030), (38, 483865), (47, 391210), (58, 317015), (71, 258970), (94, 195605), (95, 193546), (142, 129485), (145, 126806), (190, 96773), (235, 78242), (290, 63403), (355, 51794), (470, 39121), (551, 33370), (710, 25897), (893, 20590), (1102, 16685), (1349, 13630), (1363, 13490), (1786, 10295), (2059, 8930), (2698, 6815), (2726, 6745), (2755, 6674), (3337, 5510), (4118, 4465)]