128840240

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{5987}}^1$

素因数の和:6269

約数の個数: 40

約数和(自身を含む): 300717360

約数和(自身を除く): 171877120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 538, 1076, 1345, 2152, 2690, 4304, 5380, 5987, 10760, 11974, 21520, 23948, 29935, 47896, 59870, 95792, 119740, 239480, 478960, 1610503, 3221006, 6442012, 8052515, 12884024, 16105030, 25768048, 32210060, 64420120, 128840240]

約数ペア:

[(1, 128840240), (2, 64420120), (4, 32210060), (5, 25768048), (8, 16105030), (10, 12884024), (16, 8052515), (20, 6442012), (40, 3221006), (80, 1610503), (269, 478960), (538, 239480), (1076, 119740), (1345, 95792), (2152, 59870), (2690, 47896), (4304, 29935), (5380, 23948), (5987, 21520), (10760, 11974)]