20512790221

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{26489}}^1$

素因数の和:26709

約数の個数: 32

約数和(自身を含む): 26091590400

約数和(自身を除く): 5578800179

約数列:

[1, 7, 11, 77, 89, 113, 623, 791, 979, 1243, 6853, 8701, 10057, 26489, 70399, 110627, 185423, 291379, 774389, 2039653, 2357521, 2993257, 16502647, 20952799, 25932731, 32925827, 181529117, 230480789, 266399873, 1864799111, 2930398603, 20512790221]

約数ペア:

[(1, 20512790221), (7, 2930398603), (11, 1864799111), (77, 266399873), (89, 230480789), (113, 181529117), (623, 32925827), (791, 25932731), (979, 20952799), (1243, 16502647), (6853, 2993257), (8701, 2357521), (10057, 2039653), (26489, 774389), (70399, 291379), (110627, 185423)]