20557607

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:120

約数の個数: 48

約数和(自身を含む): 28071360

約数和(自身を除く): 7513753

約数列:

[1, 7, 17, 23, 29, 37, 49, 119, 161, 203, 259, 391, 493, 629, 667, 833, 851, 1073, 1127, 1421, 1813, 2737, 3451, 4403, 4669, 5957, 7511, 11339, 14467, 18241, 19159, 24157, 24679, 30821, 32683, 41699, 52577, 79373, 101269, 127687, 172753, 419543, 555611, 708883, 893809, 1209271, 2936801, 20557607]

約数ペア:

[(1, 20557607), (7, 2936801), (17, 1209271), (23, 893809), (29, 708883), (37, 555611), (49, 419543), (119, 172753), (161, 127687), (203, 101269), (259, 79373), (391, 52577), (493, 41699), (629, 32683), (667, 30821), (833, 24679), (851, 24157), (1073, 19159), (1127, 18241), (1421, 14467), (1813, 11339), (2737, 7511), (3451, 5957), (4403, 4669)]