20837215

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 9022625

約数列:

[1, 5, 7, 35, 47, 53, 235, 239, 265, 329, 371, 1195, 1645, 1673, 1855, 2491, 8365, 11233, 12455, 12667, 17437, 56165, 63335, 78631, 87185, 88669, 393155, 443345, 595349, 2976745, 4167443, 20837215]

約数ペア:

[(1, 20837215), (5, 4167443), (7, 2976745), (35, 595349), (47, 443345), (53, 393155), (235, 88669), (239, 87185), (265, 78631), (329, 63335), (371, 56165), (1195, 17437), (1645, 12667), (1673, 12455), (1855, 11233), (2491, 8365)]