20571278

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:337

約数の個数: 48

約数和(自身を含む): 39395664

約数和(自身を除く): 18824386

約数列:

[1, 2, 7, 13, 14, 26, 49, 67, 91, 98, 134, 182, 241, 469, 482, 637, 871, 938, 1274, 1687, 1742, 3133, 3283, 3374, 6097, 6266, 6566, 11809, 12194, 16147, 21931, 23618, 32294, 42679, 43862, 85358, 113029, 153517, 209911, 226058, 307034, 419822, 791203, 1469377, 1582406, 2938754, 10285639, 20571278]

約数ペア:

[(1, 20571278), (2, 10285639), (7, 2938754), (13, 1582406), (14, 1469377), (26, 791203), (49, 419822), (67, 307034), (91, 226058), (98, 209911), (134, 153517), (182, 113029), (241, 85358), (469, 43862), (482, 42679), (637, 32294), (871, 23618), (938, 21931), (1274, 16147), (1687, 12194), (1742, 11809), (3133, 6566), (3283, 6266), (3374, 6097)]