427778211

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{1951}}^1$

素因数の和:2211

約数の個数: 32

約数和(自身を含む): 667865088

約数和(自身を除く): 240086877

約数列:

[1, 3, 7, 21, 53, 159, 197, 371, 591, 1113, 1379, 1951, 4137, 5853, 10441, 13657, 31323, 40971, 73087, 103403, 219261, 310209, 384347, 723821, 1153041, 2171463, 2690429, 8071287, 20370391, 61111173, 142592737, 427778211]

約数ペア:

[(1, 427778211), (3, 142592737), (7, 61111173), (21, 20370391), (53, 8071287), (159, 2690429), (197, 2171463), (371, 1153041), (591, 723821), (1113, 384347), (1379, 310209), (1951, 219261), (4137, 103403), (5853, 73087), (10441, 40971), (13657, 31323)]