20168440

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6907}}^1$

素因数の和:6991

約数の個数: 32

約数和(自身を含む): 46007280

約数和(自身を除く): 25838840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6907, 13814, 27628, 34535, 55256, 69070, 138140, 276280, 504211, 1008422, 2016844, 2521055, 4033688, 5042110, 10084220, 20168440]

約数ペア:

[(1, 20168440), (2, 10084220), (4, 5042110), (5, 4033688), (8, 2521055), (10, 2016844), (20, 1008422), (40, 504211), (73, 276280), (146, 138140), (292, 69070), (365, 55256), (584, 34535), (730, 27628), (1460, 13814), (2920, 6907)]