21299536

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8167}}^1$

素因数の和:8338

約数の個数: 20

約数和(自身を含む): 41526112

約数和(自身を除く): 20226576

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8167, 16334, 32668, 65336, 130672, 1331221, 2662442, 5324884, 10649768, 21299536]

約数ペア:

[(1, 21299536), (2, 10649768), (4, 5324884), (8, 2662442), (16, 1331221), (163, 130672), (326, 65336), (652, 32668), (1304, 16334), (2608, 8167)]