19809818

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{10639}}^1$

素因数の和:10674

約数の個数: 24

約数和(自身を含む): 36388800

約数和(自身を除く): 16578982

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862, 10639, 21278, 74473, 148946, 202141, 404282, 521311, 1042622, 1414987, 2829974, 9904909, 19809818]

約数ペア:

[(1, 19809818), (2, 9904909), (7, 2829974), (14, 1414987), (19, 1042622), (38, 521311), (49, 404282), (98, 202141), (133, 148946), (266, 74473), (931, 21278), (1862, 10639)]