81666890

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{739}}^1$

素因数の和:1046

約数の個数: 32

約数和(自身を含む): 151208640

約数和(自身を除く): 69541750

約数列:

[1, 2, 5, 10, 43, 86, 215, 257, 430, 514, 739, 1285, 1478, 2570, 3695, 7390, 11051, 22102, 31777, 55255, 63554, 110510, 158885, 189923, 317770, 379846, 949615, 1899230, 8166689, 16333378, 40833445, 81666890]

約数ペア:

[(1, 81666890), (2, 40833445), (5, 16333378), (10, 8166689), (43, 1899230), (86, 949615), (215, 379846), (257, 317770), (430, 189923), (514, 158885), (739, 110510), (1285, 63554), (1478, 55255), (2570, 31777), (3695, 22102), (7390, 11051)]