21379124

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{3001}}^1$

素因数の和:3155

約数の個数: 24

約数和(自身を含む): 40599048

約数和(自身を除く): 19219924

約数列:

[1, 2, 4, 13, 26, 52, 137, 274, 548, 1781, 3001, 3562, 6002, 7124, 12004, 39013, 78026, 156052, 411137, 822274, 1644548, 5344781, 10689562, 21379124]

約数ペア:

[(1, 21379124), (2, 10689562), (4, 5344781), (13, 1644548), (26, 822274), (52, 411137), (137, 156052), (274, 78026), (548, 39013), (1781, 12004), (3001, 7124), (3562, 6002)]