20215404

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:811

約数の個数: 72

約数和(自身を含む): 56609280

約数和(自身を除く): 36393876

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 71, 99, 132, 142, 198, 213, 284, 396, 426, 639, 719, 781, 852, 1278, 1438, 1562, 2157, 2343, 2556, 2876, 3124, 4314, 4686, 6471, 7029, 7909, 8628, 9372, 12942, 14058, 15818, 23727, 25884, 28116, 31636, 47454, 51049, 71181, 94908, 102098, 142362, 153147, 204196, 284724, 306294, 459441, 561539, 612588, 918882, 1123078, 1684617, 1837764, 2246156, 3369234, 5053851, 6738468, 10107702, 20215404]

約数ペア:

[(1, 20215404), (2, 10107702), (3, 6738468), (4, 5053851), (6, 3369234), (9, 2246156), (11, 1837764), (12, 1684617), (18, 1123078), (22, 918882), (33, 612588), (36, 561539), (44, 459441), (66, 306294), (71, 284724), (99, 204196), (132, 153147), (142, 142362), (198, 102098), (213, 94908), (284, 71181), (396, 51049), (426, 47454), (639, 31636), (719, 28116), (781, 25884), (852, 23727), (1278, 15818), (1438, 14058), (1562, 12942), (2157, 9372), (2343, 8628), (2556, 7909), (2876, 7029), (3124, 6471), (4314, 4686)]