21738908

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{211}}^1\times {\mathrm{599}}^1$

素因数の和:857

約数の個数: 24

約数和(自身を含む): 39177600

約数和(自身を除く): 17438692

約数列:

[1, 2, 4, 43, 86, 172, 211, 422, 599, 844, 1198, 2396, 9073, 18146, 25757, 36292, 51514, 103028, 126389, 252778, 505556, 5434727, 10869454, 21738908]

約数ペア:

[(1, 21738908), (2, 10869454), (4, 5434727), (43, 505556), (86, 252778), (172, 126389), (211, 103028), (422, 51514), (599, 36292), (844, 25757), (1198, 18146), (2396, 9073)]