20995610

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:518

約数の個数: 32

約数和(自身を含む): 39042432

約数和(自身を除く): 18046822

約数列:

[1, 2, 5, 10, 43, 86, 157, 215, 311, 314, 430, 622, 785, 1555, 1570, 3110, 6751, 13373, 13502, 26746, 33755, 48827, 66865, 67510, 97654, 133730, 244135, 488270, 2099561, 4199122, 10497805, 20995610]

約数ペア:

[(1, 20995610), (2, 10497805), (5, 4199122), (10, 2099561), (43, 488270), (86, 244135), (157, 133730), (215, 97654), (311, 67510), (314, 66865), (430, 48827), (622, 33755), (785, 26746), (1555, 13502), (1570, 13373), (3110, 6751)]