21086408

素因数分解:

$2^3\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1951}}^1$

素因数の和:2157

約数の個数: 32

約数和(自身を含む): 45442560

約数和(自身を除く): 24356152

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 193, 386, 772, 1351, 1544, 1951, 2702, 3902, 5404, 7804, 10808, 13657, 15608, 27314, 54628, 109256, 376543, 753086, 1506172, 2635801, 3012344, 5271602, 10543204, 21086408]

約数ペア:

[(1, 21086408), (2, 10543204), (4, 5271602), (7, 3012344), (8, 2635801), (14, 1506172), (28, 753086), (56, 376543), (193, 109256), (386, 54628), (772, 27314), (1351, 15608), (1544, 13657), (1951, 10808), (2702, 7804), (3902, 5404)]