20855289

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{967}}^1$

素因数の和:1069

約数の個数: 32

約数和(自身を含む): 34693120

約数和(自身を除く): 13837831

約数列:

[1, 3, 7, 13, 21, 39, 79, 91, 237, 273, 553, 967, 1027, 1659, 2901, 3081, 6769, 7189, 12571, 20307, 21567, 37713, 76393, 87997, 229179, 263991, 534751, 993109, 1604253, 2979327, 6951763, 20855289]

約数ペア:

[(1, 20855289), (3, 6951763), (7, 2979327), (13, 1604253), (21, 993109), (39, 534751), (79, 263991), (91, 229179), (237, 87997), (273, 76393), (553, 37713), (967, 21567), (1027, 20307), (1659, 12571), (2901, 7189), (3081, 6769)]