21271906

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:346

約数の個数: 32

約数和(自身を含む): 35280000

約数和(自身を除く): 14008094

約数列:

[1, 2, 19, 29, 38, 58, 97, 194, 199, 398, 551, 1102, 1843, 2813, 3686, 3781, 5626, 5771, 7562, 11542, 19303, 38606, 53447, 106894, 109649, 219298, 366757, 559787, 733514, 1119574, 10635953, 21271906]

約数ペア:

[(1, 21271906), (2, 10635953), (19, 1119574), (29, 733514), (38, 559787), (58, 366757), (97, 219298), (194, 109649), (199, 106894), (398, 53447), (551, 38606), (1102, 19303), (1843, 11542), (2813, 7562), (3686, 5771), (3781, 5626)]