21438403

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{359}}^1\times {\mathrm{449}}^1$

素因数の和:834

約数の個数: 16

約数和(自身を含む): 25920000

約数和(自身を除く): 4481597

約数列:

[1, 7, 19, 133, 359, 449, 2513, 3143, 6821, 8531, 47747, 59717, 161191, 1128337, 3062629, 21438403]

約数ペア:

[(1, 21438403), (7, 3062629), (19, 1128337), (133, 161191), (359, 59717), (449, 47747), (2513, 8531), (3143, 6821)]