31767981

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{773}}^1$

素因数の和:905

約数の個数: 32

約数和(自身を含む): 51517440

約数和(自身を除く): 19749459

約数列:

[1, 3, 7, 19, 21, 57, 103, 133, 309, 399, 721, 773, 1957, 2163, 2319, 5411, 5871, 13699, 14687, 16233, 41097, 44061, 79619, 102809, 238857, 308427, 557333, 1512761, 1671999, 4538283, 10589327, 31767981]

約数ペア:

[(1, 31767981), (3, 10589327), (7, 4538283), (19, 1671999), (21, 1512761), (57, 557333), (103, 308427), (133, 238857), (309, 102809), (399, 79619), (721, 44061), (773, 41097), (1957, 16233), (2163, 14687), (2319, 13699), (5411, 5871)]