21424468

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{773}}^1$

素因数の和:844

約数の個数: 36

約数和(自身を含む): 41642748

約数和(自身を除く): 20218280

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 164, 169, 338, 533, 676, 773, 1066, 1546, 2132, 3092, 6929, 10049, 13858, 20098, 27716, 31693, 40196, 63386, 126772, 130637, 261274, 412009, 522548, 824018, 1648036, 5356117, 10712234, 21424468]

約数ペア:

[(1, 21424468), (2, 10712234), (4, 5356117), (13, 1648036), (26, 824018), (41, 522548), (52, 412009), (82, 261274), (164, 130637), (169, 126772), (338, 63386), (533, 40196), (676, 31693), (773, 27716), (1066, 20098), (1546, 13858), (2132, 10049), (3092, 6929)]