20808897865

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2295521}}^1$

素因数の和:2295577

約数の個数: 24

約数和(自身を含む): 29832603912

約数和(自身を除く): 9023706047

約数列:

[1, 5, 7, 35, 37, 49, 185, 245, 259, 1295, 1813, 9065, 2295521, 11477605, 16068647, 80343235, 84934277, 112480529, 424671385, 562402645, 594539939, 2972699695, 4161779573, 20808897865]

約数ペア:

[(1, 20808897865), (5, 4161779573), (7, 2972699695), (35, 594539939), (37, 562402645), (49, 424671385), (185, 112480529), (245, 84934277), (259, 80343235), (1295, 16068647), (1813, 11477605), (9065, 2295521)]