20456863

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:156

約数の個数: 32

約数和(自身を含む): 26048000

約数和(自身を除く): 5591137

約数列:

[1, 7, 19, 43, 49, 73, 133, 301, 343, 511, 817, 931, 1387, 2107, 3139, 3577, 5719, 6517, 9709, 14749, 21973, 25039, 40033, 59641, 67963, 153811, 280231, 417487, 475741, 1076677, 2922409, 20456863]

約数ペア:

[(1, 20456863), (7, 2922409), (19, 1076677), (43, 475741), (49, 417487), (73, 280231), (133, 153811), (301, 67963), (343, 59641), (511, 40033), (817, 25039), (931, 21973), (1387, 14749), (2107, 9709), (3139, 6517), (3577, 5719)]