21047804869

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{653}}^1\times {\mathrm{2789}}^1$

素因数の和:3589

約数の個数: 32

約数和(自身を含む): 26158325760

約数和(自身を除く): 5110520891

約数列:

[1, 7, 13, 91, 127, 653, 889, 1651, 2789, 4571, 8489, 11557, 19523, 36257, 59423, 82931, 253799, 354203, 580517, 1078103, 1821217, 2479421, 4604639, 7546721, 12748519, 23675821, 32232473, 165730747, 231294559, 1619061913, 3006829267, 21047804869]

約数ペア:

[(1, 21047804869), (7, 3006829267), (13, 1619061913), (91, 231294559), (127, 165730747), (653, 32232473), (889, 23675821), (1651, 12748519), (2789, 7546721), (4571, 4604639), (8489, 2479421), (11557, 1821217), (19523, 1078103), (36257, 580517), (59423, 354203), (82931, 253799)]