81639843

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 116793600

約数和(自身を除く): 35153757

約数列:

[1, 3, 29, 43, 87, 129, 139, 157, 417, 471, 1247, 3741, 4031, 4553, 5977, 6751, 12093, 13659, 17931, 20253, 21823, 65469, 173333, 195779, 519999, 587337, 632867, 938389, 1898601, 2815167, 27213281, 81639843]

約数ペア:

[(1, 81639843), (3, 27213281), (29, 2815167), (43, 1898601), (87, 938389), (129, 632867), (139, 587337), (157, 519999), (417, 195779), (471, 173333), (1247, 65469), (3741, 21823), (4031, 20253), (4553, 17931), (5977, 13659), (6751, 12093)]