20777008

素因数分解:

$2^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3947}}^1$

素因数の和:4009

約数の個数: 40

約数和(自身を含む): 46996992

約数和(自身を除く): 26219984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 47, 56, 94, 112, 188, 329, 376, 658, 752, 1316, 2632, 3947, 5264, 7894, 15788, 27629, 31576, 55258, 63152, 110516, 185509, 221032, 371018, 442064, 742036, 1298563, 1484072, 2597126, 2968144, 5194252, 10388504, 20777008]

約数ペア:

[(1, 20777008), (2, 10388504), (4, 5194252), (7, 2968144), (8, 2597126), (14, 1484072), (16, 1298563), (28, 742036), (47, 442064), (56, 371018), (94, 221032), (112, 185509), (188, 110516), (329, 63152), (376, 55258), (658, 31576), (752, 27629), (1316, 15788), (2632, 7894), (3947, 5264)]