21998456

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{63949}}^1$

素因数の和:63998

約数の個数: 16

約数和(自身を含む): 42207000

約数和(自身を除く): 20208544

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 63949, 127898, 255796, 511592, 2749807, 5499614, 10999228, 21998456]

約数ペア:

[(1, 21998456), (2, 10999228), (4, 5499614), (8, 2749807), (43, 511592), (86, 255796), (172, 127898), (344, 63949)]