220890999

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{9803}}^1$

素因数の和:9879

約数の個数: 32

約数和(自身を含む): 357649920

約数和(自身を除く): 136758921

約数列:

[1, 3, 7, 21, 29, 37, 87, 111, 203, 259, 609, 777, 1073, 3219, 7511, 9803, 22533, 29409, 68621, 205863, 284287, 362711, 852861, 1088133, 1990009, 2538977, 5970027, 7616931, 10518619, 31555857, 73630333, 220890999]

約数ペア:

[(1, 220890999), (3, 73630333), (7, 31555857), (21, 10518619), (29, 7616931), (37, 5970027), (87, 2538977), (111, 1990009), (203, 1088133), (259, 852861), (609, 362711), (777, 284287), (1073, 205863), (3219, 68621), (7511, 29409), (9803, 22533)]