81189808

素因数分解:

$2^4\times 7^1\times {\mathrm{277}}^1\times {\mathrm{2617}}^1$

素因数の和:2909

約数の個数: 40

約数和(自身を含む): 180495392

約数和(自身を除く): 99305584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 277, 554, 1108, 1939, 2216, 2617, 3878, 4432, 5234, 7756, 10468, 15512, 18319, 20936, 31024, 36638, 41872, 73276, 146552, 293104, 724909, 1449818, 2899636, 5074363, 5799272, 10148726, 11598544, 20297452, 40594904, 81189808]

約数ペア:

[(1, 81189808), (2, 40594904), (4, 20297452), (7, 11598544), (8, 10148726), (14, 5799272), (16, 5074363), (28, 2899636), (56, 1449818), (112, 724909), (277, 293104), (554, 146552), (1108, 73276), (1939, 41872), (2216, 36638), (2617, 31024), (3878, 20936), (4432, 18319), (5234, 15512), (7756, 10468)]