21547653

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{601}}^1$

素因数の和:677

約数の個数: 32

約数和(自身を含む): 32941440

約数和(自身を除く): 11393787

約数列:

[1, 3, 17, 19, 37, 51, 57, 111, 323, 601, 629, 703, 969, 1803, 1887, 2109, 10217, 11419, 11951, 22237, 30651, 34257, 35853, 66711, 194123, 378029, 422503, 582369, 1134087, 1267509, 7182551, 21547653]

約数ペア:

[(1, 21547653), (3, 7182551), (17, 1267509), (19, 1134087), (37, 582369), (51, 422503), (57, 378029), (111, 194123), (323, 66711), (601, 35853), (629, 34257), (703, 30651), (969, 22237), (1803, 11951), (1887, 11419), (2109, 10217)]