21796528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2437}}^1$

素因数の和:2501

約数の個数: 40

約数和(自身を含む): 46556048

約数和(自身を除く): 24759520

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 172, 208, 344, 559, 688, 1118, 2236, 2437, 4472, 4874, 8944, 9748, 19496, 31681, 38992, 63362, 104791, 126724, 209582, 253448, 419164, 506896, 838328, 1362283, 1676656, 2724566, 5449132, 10898264, 21796528]

約数ペア:

[(1, 21796528), (2, 10898264), (4, 5449132), (8, 2724566), (13, 1676656), (16, 1362283), (26, 838328), (43, 506896), (52, 419164), (86, 253448), (104, 209582), (172, 126724), (208, 104791), (344, 63362), (559, 38992), (688, 31681), (1118, 19496), (2236, 9748), (2437, 8944), (4472, 4874)]