20148080

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5857}}^1$

素因数の和:5913

約数の個数: 40

約数和(自身を含む): 47941872

約数和(自身を除く): 27793792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5857, 11714, 23428, 29285, 46856, 58570, 93712, 117140, 234280, 251851, 468560, 503702, 1007404, 1259255, 2014808, 2518510, 4029616, 5037020, 10074040, 20148080]

約数ペア:

[(1, 20148080), (2, 10074040), (4, 5037020), (5, 4029616), (8, 2518510), (10, 2014808), (16, 1259255), (20, 1007404), (40, 503702), (43, 468560), (80, 251851), (86, 234280), (172, 117140), (215, 93712), (344, 58570), (430, 46856), (688, 29285), (860, 23428), (1720, 11714), (3440, 5857)]