129719680

素因数分解:

$2^7\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1291}}^1$

素因数の和:1467

約数の個数: 64

約数和(自身を含む): 312328080

約数和(自身を除く): 182608400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 314, 320, 628, 640, 785, 1256, 1291, 1570, 2512, 2582, 3140, 5024, 5164, 6280, 6455, 10048, 10328, 12560, 12910, 20096, 20656, 25120, 25820, 41312, 50240, 51640, 82624, 100480, 103280, 165248, 202687, 206560, 405374, 413120, 810748, 826240, 1013435, 1621496, 2026870, 3242992, 4053740, 6485984, 8107480, 12971968, 16214960, 25943936, 32429920, 64859840, 129719680]

約数ペア:

[(1, 129719680), (2, 64859840), (4, 32429920), (5, 25943936), (8, 16214960), (10, 12971968), (16, 8107480), (20, 6485984), (32, 4053740), (40, 3242992), (64, 2026870), (80, 1621496), (128, 1013435), (157, 826240), (160, 810748), (314, 413120), (320, 405374), (628, 206560), (640, 202687), (785, 165248), (1256, 103280), (1291, 100480), (1570, 82624), (2512, 51640), (2582, 50240), (3140, 41312), (5024, 25820), (5164, 25120), (6280, 20656), (6455, 20096), (10048, 12910), (10328, 12560)]