20573140

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2999}}^1$

素因数の和:3029

約数の個数: 48

約数和(自身を含む): 50400000

約数和(自身を除く): 29826860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 2999, 3430, 5998, 6860, 11996, 14995, 20993, 29990, 41986, 59980, 83972, 104965, 146951, 209930, 293902, 419860, 587804, 734755, 1028657, 1469510, 2057314, 2939020, 4114628, 5143285, 10286570, 20573140]

約数ペア:

[(1, 20573140), (2, 10286570), (4, 5143285), (5, 4114628), (7, 2939020), (10, 2057314), (14, 1469510), (20, 1028657), (28, 734755), (35, 587804), (49, 419860), (70, 293902), (98, 209930), (140, 146951), (196, 104965), (245, 83972), (343, 59980), (490, 41986), (686, 29990), (980, 20993), (1372, 14995), (1715, 11996), (2999, 6860), (3430, 5998)]