21843965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 31159296

約数和(自身を除く): 9315331

約数列:

[1, 5, 11, 13, 55, 65, 137, 143, 223, 685, 715, 1115, 1507, 1781, 2453, 2899, 7535, 8905, 12265, 14495, 19591, 30551, 31889, 97955, 152755, 159445, 336061, 397163, 1680305, 1985815, 4368793, 21843965]

約数ペア:

[(1, 21843965), (5, 4368793), (11, 1985815), (13, 1680305), (55, 397163), (65, 336061), (137, 159445), (143, 152755), (223, 97955), (685, 31889), (715, 30551), (1115, 19591), (1507, 14495), (1781, 12265), (2453, 8905), (2899, 7535)]