20439055

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1549}}^1$

素因数の和:1603

約数の個数: 32

約数和(自身を含む): 31248000

約数和(自身を除く): 10808945

約数列:

[1, 5, 7, 13, 29, 35, 65, 91, 145, 203, 377, 455, 1015, 1549, 1885, 2639, 7745, 10843, 13195, 20137, 44921, 54215, 100685, 140959, 224605, 314447, 583973, 704795, 1572235, 2919865, 4087811, 20439055]

約数ペア:

[(1, 20439055), (5, 4087811), (7, 2919865), (13, 1572235), (29, 704795), (35, 583973), (65, 314447), (91, 224605), (145, 140959), (203, 100685), (377, 54215), (455, 44921), (1015, 20137), (1549, 13195), (1885, 10843), (2639, 7745)]