20212115

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1117}}^1$

素因数の和:1187

約数の個数: 32

約数和(自身を含む): 30910464

約数和(自身を除く): 10698349

約数列:

[1, 5, 7, 11, 35, 47, 55, 77, 235, 329, 385, 517, 1117, 1645, 2585, 3619, 5585, 7819, 12287, 18095, 39095, 52499, 61435, 86009, 262495, 367493, 430045, 577489, 1837465, 2887445, 4042423, 20212115]

約数ペア:

[(1, 20212115), (5, 4042423), (7, 2887445), (11, 1837465), (35, 577489), (47, 430045), (55, 367493), (77, 262495), (235, 86009), (329, 61435), (385, 52499), (517, 39095), (1117, 18095), (1645, 12287), (2585, 7819), (3619, 5585)]