9920911

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:112

約数の個数: 48

約数和(自身を含む): 14478912

約数和(自身を除く): 4558001

約数列:

[1, 7, 11, 13, 17, 53, 77, 91, 119, 121, 143, 187, 221, 371, 583, 689, 847, 901, 1001, 1309, 1547, 1573, 2057, 2431, 4081, 4823, 6307, 6413, 7579, 9911, 11011, 11713, 14399, 17017, 26741, 44891, 53053, 69377, 81991, 83369, 109021, 128843, 187187, 583583, 763147, 901901, 1417273, 9920911]

約数ペア:

[(1, 9920911), (7, 1417273), (11, 901901), (13, 763147), (17, 583583), (53, 187187), (77, 128843), (91, 109021), (119, 83369), (121, 81991), (143, 69377), (187, 53053), (221, 44891), (371, 26741), (583, 17017), (689, 14399), (847, 11713), (901, 11011), (1001, 9911), (1309, 7579), (1547, 6413), (1573, 6307), (2057, 4823), (2431, 4081)]