21834351

素因数分解:

$3^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{643}}^1$

素因数の和:681

約数の個数: 48

約数和(自身を含む): 40185600

約数和(自身を除く): 18351249

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 343, 441, 539, 643, 693, 1029, 1617, 1929, 3087, 3773, 4501, 4851, 5787, 7073, 11319, 13503, 21219, 31507, 33957, 40509, 49511, 63657, 94521, 148533, 220549, 283563, 346577, 445599, 661647, 1039731, 1984941, 2426039, 3119193, 7278117, 21834351]

約数ペア:

[(1, 21834351), (3, 7278117), (7, 3119193), (9, 2426039), (11, 1984941), (21, 1039731), (33, 661647), (49, 445599), (63, 346577), (77, 283563), (99, 220549), (147, 148533), (231, 94521), (343, 63657), (441, 49511), (539, 40509), (643, 33957), (693, 31507), (1029, 21219), (1617, 13503), (1929, 11319), (3087, 7073), (3773, 5787), (4501, 4851)]