388987753

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{1399}}^1$

素因数の和:1597

約数の個数: 32

約数和(自身を含む): 509644800

約数和(自身を除く): 120657047

約数列:

[1, 7, 11, 23, 77, 157, 161, 253, 1099, 1399, 1727, 1771, 3611, 9793, 12089, 15389, 25277, 32177, 39721, 107723, 219643, 225239, 278047, 353947, 1537501, 2416073, 2477629, 5051789, 16912511, 35362523, 55569679, 388987753]

約数ペア:

[(1, 388987753), (7, 55569679), (11, 35362523), (23, 16912511), (77, 5051789), (157, 2477629), (161, 2416073), (253, 1537501), (1099, 353947), (1399, 278047), (1727, 225239), (1771, 219643), (3611, 107723), (9793, 39721), (12089, 32177), (15389, 25277)]