21888874

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:179

約数の個数: 48

約数和(自身を含む): 40818816

約数和(自身を除く): 18929942

約数列:

[1, 2, 7, 14, 19, 38, 61, 71, 122, 133, 142, 266, 361, 427, 497, 722, 854, 994, 1159, 1349, 2318, 2527, 2698, 4331, 5054, 8113, 8662, 9443, 16226, 18886, 22021, 25631, 30317, 44042, 51262, 60634, 82289, 154147, 164578, 179417, 308294, 358834, 576023, 1152046, 1563491, 3126982, 10944437, 21888874]

約数ペア:

[(1, 21888874), (2, 10944437), (7, 3126982), (14, 1563491), (19, 1152046), (38, 576023), (61, 358834), (71, 308294), (122, 179417), (133, 164578), (142, 154147), (266, 82289), (361, 60634), (427, 51262), (497, 44042), (722, 30317), (854, 25631), (994, 22021), (1159, 18886), (1349, 16226), (2318, 9443), (2527, 8662), (2698, 8113), (4331, 5054)]