18923440

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5501}}^1$

素因数の和:5557

約数の個数: 40

約数和(自身を含む): 45028368

約数和(自身を除く): 26104928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5501, 11002, 22004, 27505, 44008, 55010, 88016, 110020, 220040, 236543, 440080, 473086, 946172, 1182715, 1892344, 2365430, 3784688, 4730860, 9461720, 18923440]

約数ペア:

[(1, 18923440), (2, 9461720), (4, 4730860), (5, 3784688), (8, 2365430), (10, 1892344), (16, 1182715), (20, 946172), (40, 473086), (43, 440080), (80, 236543), (86, 220040), (172, 110020), (215, 88016), (344, 55010), (430, 44008), (688, 27505), (860, 22004), (1720, 11002), (3440, 5501)]