221035521

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{40639}}^1$

素因数の和:40693

約数の個数: 24

約数和(自身を含む): 352104960

約数和(自身を除く): 131069439

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 5439, 40639, 121917, 284473, 853419, 1503643, 1991311, 4510929, 5973933, 10525501, 31576503, 73678507, 221035521]

約数ペア:

[(1, 221035521), (3, 73678507), (7, 31576503), (21, 10525501), (37, 5973933), (49, 4510929), (111, 1991311), (147, 1503643), (259, 853419), (777, 284473), (1813, 121917), (5439, 40639)]