21218103361

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1187}}^1\times {\mathrm{5309}}^1$

素因数の和:6553

約数の個数: 32

約数和(自身を含む): 26848039680

約数和(自身を除く): 5629936319

約数列:

[1, 7, 13, 37, 91, 259, 481, 1187, 3367, 5309, 8309, 15431, 37163, 43919, 69017, 108017, 196433, 307433, 483119, 570947, 1375031, 2553629, 3996629, 6301783, 17875403, 44112481, 81923179, 233165971, 573462253, 1632161797, 3031157623, 21218103361]

約数ペア:

[(1, 21218103361), (7, 3031157623), (13, 1632161797), (37, 573462253), (91, 233165971), (259, 81923179), (481, 44112481), (1187, 17875403), (3367, 6301783), (5309, 3996629), (8309, 2553629), (15431, 1375031), (37163, 570947), (43919, 483119), (69017, 307433), (108017, 196433)]