21250628

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{173}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 44198784

約数和(自身を除く): 22948156

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 107, 164, 173, 214, 287, 346, 428, 574, 692, 749, 1148, 1211, 1498, 2422, 2996, 4387, 4844, 7093, 8774, 14186, 17548, 18511, 28372, 30709, 37022, 49651, 61418, 74044, 99302, 122836, 129577, 198604, 259154, 518308, 758951, 1517902, 3035804, 5312657, 10625314, 21250628]

約数ペア:

[(1, 21250628), (2, 10625314), (4, 5312657), (7, 3035804), (14, 1517902), (28, 758951), (41, 518308), (82, 259154), (107, 198604), (164, 129577), (173, 122836), (214, 99302), (287, 74044), (346, 61418), (428, 49651), (574, 37022), (692, 30709), (749, 28372), (1148, 18511), (1211, 17548), (1498, 14186), (2422, 8774), (2996, 7093), (4387, 4844)]