21725858

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1987}}^1$

素因数の和:2078

約数の個数: 32

約数和(自身を含む): 41223168

約数和(自身を除く): 19497310

約数列:

[1, 2, 7, 11, 14, 22, 71, 77, 142, 154, 497, 781, 994, 1562, 1987, 3974, 5467, 10934, 13909, 21857, 27818, 43714, 141077, 152999, 282154, 305998, 987539, 1551847, 1975078, 3103694, 10862929, 21725858]

約数ペア:

[(1, 21725858), (2, 10862929), (7, 3103694), (11, 1975078), (14, 1551847), (22, 987539), (71, 305998), (77, 282154), (142, 152999), (154, 141077), (497, 43714), (781, 27818), (994, 21857), (1562, 13909), (1987, 10934), (3974, 5467)]