20254731

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 32409600

約数和(自身を除く): 12154869

約数列:

[1, 3, 7, 21, 29, 79, 87, 203, 237, 421, 553, 609, 1263, 1659, 2291, 2947, 6873, 8841, 12209, 16037, 33259, 36627, 48111, 85463, 99777, 232813, 256389, 698439, 964511, 2893533, 6751577, 20254731]

約数ペア:

[(1, 20254731), (3, 6751577), (7, 2893533), (21, 964511), (29, 698439), (79, 256389), (87, 232813), (203, 99777), (237, 85463), (421, 48111), (553, 36627), (609, 33259), (1263, 16037), (1659, 12209), (2291, 8841), (2947, 6873)]