20768921607

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1217}}^1\times {\mathrm{6829}}^1$

素因数の和:8080

約数の個数: 48

約数和(自身を含む): 34140929760

約数和(自身を除く): 13372008153

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 1217, 2499, 3651, 6829, 8519, 20487, 20689, 25557, 47803, 59633, 62067, 116093, 143409, 144823, 178899, 334621, 348279, 434469, 812651, 1003863, 1013761, 2437953, 3041283, 5688557, 8310893, 17065671, 24932679, 58176251, 141285181, 174528753, 407233757, 423855543, 988996267, 1221701271, 2966988801, 6922973869, 20768921607]

約数ペア:

[(1, 20768921607), (3, 6922973869), (7, 2966988801), (17, 1221701271), (21, 988996267), (49, 423855543), (51, 407233757), (119, 174528753), (147, 141285181), (357, 58176251), (833, 24932679), (1217, 17065671), (2499, 8310893), (3651, 5688557), (6829, 3041283), (8519, 2437953), (20487, 1013761), (20689, 1003863), (25557, 812651), (47803, 434469), (59633, 348279), (62067, 334621), (116093, 178899), (143409, 144823)]