81719561

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{383}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 108822528

約数和(自身を除く): 27102967

約数列:

[1, 7, 11, 17, 77, 119, 163, 187, 383, 1141, 1309, 1793, 2681, 2771, 4213, 6511, 12551, 19397, 29491, 30481, 45577, 62429, 71621, 213367, 437003, 501347, 686719, 1061293, 4807033, 7429051, 11674223, 81719561]

約数ペア:

[(1, 81719561), (7, 11674223), (11, 7429051), (17, 4807033), (77, 1061293), (119, 686719), (163, 501347), (187, 437003), (383, 213367), (1141, 71621), (1309, 62429), (1793, 45577), (2681, 30481), (2771, 29491), (4213, 19397), (6511, 12551)]