80678140

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{55259}}^1$

素因数の和:55341

約数の個数: 24

約数和(自身を含む): 171748080

約数和(自身を除く): 91069940

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 55259, 110518, 221036, 276295, 552590, 1105180, 4033907, 8067814, 16135628, 20169535, 40339070, 80678140]

約数ペア:

[(1, 80678140), (2, 40339070), (4, 20169535), (5, 16135628), (10, 8067814), (20, 4033907), (73, 1105180), (146, 552590), (292, 276295), (365, 221036), (730, 110518), (1460, 55259)]