21561396479

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1429}}^1\times {\mathrm{2767}}^1$

素因数の和:4263

約数の個数: 32

約数和(自身を含む): 26599372800

約数和(自身を除く): 5037976321

約数列:

[1, 7, 19, 41, 133, 287, 779, 1429, 2767, 5453, 10003, 19369, 27151, 52573, 58589, 113447, 190057, 368011, 410123, 794129, 1113191, 2155493, 3954043, 7792337, 15088451, 27678301, 75126817, 162115763, 525887719, 1134810341, 3080199497, 21561396479]

約数ペア:

[(1, 21561396479), (7, 3080199497), (19, 1134810341), (41, 525887719), (133, 162115763), (287, 75126817), (779, 27678301), (1429, 15088451), (2767, 7792337), (5453, 3954043), (10003, 2155493), (19369, 1113191), (27151, 794129), (52573, 410123), (58589, 368011), (113447, 190057)]