19706169

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 31144960

約数和(自身を除く): 11438791

約数列:

[1, 3, 7, 21, 43, 129, 139, 157, 301, 417, 471, 903, 973, 1099, 2919, 3297, 5977, 6751, 17931, 20253, 21823, 41839, 47257, 65469, 125517, 141771, 152761, 458283, 938389, 2815167, 6568723, 19706169]

約数ペア:

[(1, 19706169), (3, 6568723), (7, 2815167), (21, 938389), (43, 458283), (129, 152761), (139, 141771), (157, 125517), (301, 65469), (417, 47257), (471, 41839), (903, 21823), (973, 20253), (1099, 17931), (2919, 6751), (3297, 5977)]