21337745

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{2713}}^1$

素因数の和:2753

約数の個数: 24

約数和(自身を含む): 30320808

約数和(自身を除く): 8983063

約数列:

[1, 5, 11, 13, 55, 65, 121, 143, 605, 715, 1573, 2713, 7865, 13565, 29843, 35269, 149215, 176345, 328273, 387959, 1641365, 1939795, 4267549, 21337745]

約数ペア:

[(1, 21337745), (5, 4267549), (11, 1939795), (13, 1641365), (55, 387959), (65, 328273), (121, 176345), (143, 149215), (605, 35269), (715, 29843), (1573, 13565), (2713, 7865)]