20553995

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{271}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 31021056

約数和(自身を除く): 10467061

約数列:

[1, 5, 7, 11, 35, 55, 77, 197, 271, 385, 985, 1355, 1379, 1897, 2167, 2981, 6895, 9485, 10835, 14905, 15169, 20867, 53387, 75845, 104335, 266935, 373709, 587257, 1868545, 2936285, 4110799, 20553995]

約数ペア:

[(1, 20553995), (5, 4110799), (7, 2936285), (11, 1868545), (35, 587257), (55, 373709), (77, 266935), (197, 104335), (271, 75845), (385, 53387), (985, 20867), (1355, 15169), (1379, 14905), (1897, 10835), (2167, 9485), (2981, 6895)]