21640304

素因数分解:

$2^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4111}}^1$

素因数の和:4173

約数の個数: 40

約数和(自身を含む): 48949248

約数和(自身を除く): 27308944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 47, 56, 94, 112, 188, 329, 376, 658, 752, 1316, 2632, 4111, 5264, 8222, 16444, 28777, 32888, 57554, 65776, 115108, 193217, 230216, 386434, 460432, 772868, 1352519, 1545736, 2705038, 3091472, 5410076, 10820152, 21640304]

約数ペア:

[(1, 21640304), (2, 10820152), (4, 5410076), (7, 3091472), (8, 2705038), (14, 1545736), (16, 1352519), (28, 772868), (47, 460432), (56, 386434), (94, 230216), (112, 193217), (188, 115108), (329, 65776), (376, 57554), (658, 32888), (752, 28777), (1316, 16444), (2632, 8222), (4111, 5264)]