21613864

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{757}}^1$

素因数の和:889

約数の個数: 32

約数和(自身を含む): 42023520

約数和(自身を除く): 20409656

約数列:

[1, 2, 4, 8, 43, 83, 86, 166, 172, 332, 344, 664, 757, 1514, 3028, 3569, 6056, 7138, 14276, 28552, 32551, 62831, 65102, 125662, 130204, 251324, 260408, 502648, 2701733, 5403466, 10806932, 21613864]

約数ペア:

[(1, 21613864), (2, 10806932), (4, 5403466), (8, 2701733), (43, 502648), (83, 260408), (86, 251324), (166, 130204), (172, 125662), (332, 65102), (344, 62831), (664, 32551), (757, 28552), (1514, 14276), (3028, 7138), (3569, 6056)]