20799831

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 31144960

約数和(自身を除く): 10345129

約数列:

[1, 3, 13, 39, 43, 79, 129, 157, 237, 471, 559, 1027, 1677, 2041, 3081, 3397, 6123, 6751, 10191, 12403, 20253, 37209, 44161, 87763, 132483, 161239, 263289, 483717, 533329, 1599987, 6933277, 20799831]

約数ペア:

[(1, 20799831), (3, 6933277), (13, 1599987), (39, 533329), (43, 483717), (79, 263289), (129, 161239), (157, 132483), (237, 87763), (471, 44161), (559, 37209), (1027, 20253), (1677, 12403), (2041, 10191), (3081, 6751), (3397, 6123)]