221495407

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{269}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 275788800

約数和(自身を除く): 54293393

約数列:

[1, 7, 19, 41, 133, 151, 269, 287, 779, 1057, 1883, 2869, 5111, 5453, 6191, 11029, 20083, 35777, 40619, 43337, 77203, 117629, 209551, 284333, 771761, 823403, 1466857, 1665379, 5402327, 11657653, 31642201, 221495407]

約数ペア:

[(1, 221495407), (7, 31642201), (19, 11657653), (41, 5402327), (133, 1665379), (151, 1466857), (269, 823403), (287, 771761), (779, 284333), (1057, 209551), (1883, 117629), (2869, 77203), (5111, 43337), (5453, 40619), (6191, 35777), (11029, 20083)]