1338820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 3282048

約数和(自身を除く): 1943228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 131, 140, 146, 262, 292, 365, 511, 524, 655, 730, 917, 1022, 1310, 1460, 1834, 2044, 2555, 2620, 3668, 4585, 5110, 9170, 9563, 10220, 18340, 19126, 38252, 47815, 66941, 95630, 133882, 191260, 267764, 334705, 669410, 1338820]

約数ペア:

[(1, 1338820), (2, 669410), (4, 334705), (5, 267764), (7, 191260), (10, 133882), (14, 95630), (20, 66941), (28, 47815), (35, 38252), (70, 19126), (73, 18340), (131, 10220), (140, 9563), (146, 9170), (262, 5110), (292, 4585), (365, 3668), (511, 2620), (524, 2555), (655, 2044), (730, 1834), (917, 1460), (1022, 1310)]