18391989

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{773}}^1$

素因数の和:897

約数の個数: 32

約数和(自身を含む): 30910464

約数和(自身を除く): 12518475

約数列:

[1, 3, 7, 11, 21, 33, 77, 103, 231, 309, 721, 773, 1133, 2163, 2319, 3399, 5411, 7931, 8503, 16233, 23793, 25509, 59521, 79619, 178563, 238857, 557333, 875809, 1671999, 2627427, 6130663, 18391989]

約数ペア:

[(1, 18391989), (3, 6130663), (7, 2627427), (11, 1671999), (21, 875809), (33, 557333), (77, 238857), (103, 178563), (231, 79619), (309, 59521), (721, 25509), (773, 23793), (1133, 16233), (2163, 8503), (2319, 7931), (3399, 5411)]