21081256

素因数分解:

$2^3\times 7^1\times {\mathrm{487}}^1\times {\mathrm{773}}^1$

素因数の和:1273

約数の個数: 32

約数和(自身を含む): 45325440

約数和(自身を除く): 24244184

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 487, 773, 974, 1546, 1948, 3092, 3409, 3896, 5411, 6184, 6818, 10822, 13636, 21644, 27272, 43288, 376451, 752902, 1505804, 2635157, 3011608, 5270314, 10540628, 21081256]

約数ペア:

[(1, 21081256), (2, 10540628), (4, 5270314), (7, 3011608), (8, 2635157), (14, 1505804), (28, 752902), (56, 376451), (487, 43288), (773, 27272), (974, 21644), (1546, 13636), (1948, 10822), (3092, 6818), (3409, 6184), (3896, 5411)]