80390821

素因数分解:

$7^2\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{521}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 97117056

約数和(自身を除く): 16726235

約数列:

[1, 7, 47, 49, 67, 329, 469, 521, 2303, 3149, 3283, 3647, 22043, 24487, 25529, 34907, 154301, 171409, 244349, 1199863, 1640629, 1710443, 11484403, 80390821]

約数ペア:

[(1, 80390821), (7, 11484403), (47, 1710443), (49, 1640629), (67, 1199863), (329, 244349), (469, 171409), (521, 154301), (2303, 34907), (3149, 25529), (3283, 24487), (3647, 22043)]