21051758

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1123}}^1$

素因数の和:1248

約数の個数: 32

約数和(自身を含む): 39277056

約数和(自身を除く): 18225298

約数列:

[1, 2, 7, 13, 14, 26, 91, 103, 182, 206, 721, 1123, 1339, 1442, 2246, 2678, 7861, 9373, 14599, 15722, 18746, 29198, 102193, 115669, 204386, 231338, 809683, 1503697, 1619366, 3007394, 10525879, 21051758]

約数ペア:

[(1, 21051758), (2, 10525879), (7, 3007394), (13, 1619366), (14, 1503697), (26, 809683), (91, 231338), (103, 204386), (182, 115669), (206, 102193), (721, 29198), (1123, 18746), (1339, 15722), (1442, 14599), (2246, 9373), (2678, 7861)]