21979724

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{1277}}^1$

素因数の和:1625

約数の個数: 24

約数和(自身を含む): 41581008

約数和(自身を除く): 19601284

約数列:

[1, 2, 4, 13, 26, 52, 331, 662, 1277, 1324, 2554, 4303, 5108, 8606, 16601, 17212, 33202, 66404, 422687, 845374, 1690748, 5494931, 10989862, 21979724]

約数ペア:

[(1, 21979724), (2, 10989862), (4, 5494931), (13, 1690748), (26, 845374), (52, 422687), (331, 66404), (662, 33202), (1277, 17212), (1324, 16601), (2554, 8606), (4303, 5108)]