2021178740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{197767}}^1$

素因数の和:197856

約数の個数: 48

約数和(自身を含む): 4917303552

約数和(自身を除く): 2896124812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 292, 365, 511, 730, 1022, 1460, 2044, 2555, 5110, 10220, 197767, 395534, 791068, 988835, 1384369, 1977670, 2768738, 3955340, 5537476, 6921845, 13843690, 14436991, 27687380, 28873982, 57747964, 72184955, 101058937, 144369910, 202117874, 288739820, 404235748, 505294685, 1010589370, 2021178740]

約数ペア:

[(1, 2021178740), (2, 1010589370), (4, 505294685), (5, 404235748), (7, 288739820), (10, 202117874), (14, 144369910), (20, 101058937), (28, 72184955), (35, 57747964), (70, 28873982), (73, 27687380), (140, 14436991), (146, 13843690), (292, 6921845), (365, 5537476), (511, 3955340), (730, 2768738), (1022, 1977670), (1460, 1384369), (2044, 988835), (2555, 791068), (5110, 395534), (10220, 197767)]