221566505

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{307}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 287400960

約数和(自身を除く): 65834455

約数列:

[1, 5, 19, 71, 95, 107, 307, 355, 535, 1349, 1535, 2033, 5833, 6745, 7597, 10165, 21797, 29165, 32849, 37985, 108985, 144343, 164245, 414143, 624131, 721715, 2070715, 2332279, 3120655, 11661395, 44313301, 221566505]

約数ペア:

[(1, 221566505), (5, 44313301), (19, 11661395), (71, 3120655), (95, 2332279), (107, 2070715), (307, 721715), (355, 624131), (535, 414143), (1349, 164245), (1535, 144343), (2033, 108985), (5833, 37985), (6745, 32849), (7597, 29165), (10165, 21797)]