77723540

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{353}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 166818960

約数和(自身を除く): 89095420

約数列:

[1, 2, 4, 5, 10, 20, 101, 109, 202, 218, 353, 404, 436, 505, 545, 706, 1010, 1090, 1412, 1765, 2020, 2180, 3530, 7060, 11009, 22018, 35653, 38477, 44036, 55045, 71306, 76954, 110090, 142612, 153908, 178265, 192385, 220180, 356530, 384770, 713060, 769540, 3886177, 7772354, 15544708, 19430885, 38861770, 77723540]

約数ペア:

[(1, 77723540), (2, 38861770), (4, 19430885), (5, 15544708), (10, 7772354), (20, 3886177), (101, 769540), (109, 713060), (202, 384770), (218, 356530), (353, 220180), (404, 192385), (436, 178265), (505, 153908), (545, 142612), (706, 110090), (1010, 76954), (1090, 71306), (1412, 55045), (1765, 44036), (2020, 38477), (2180, 35653), (3530, 22018), (7060, 11009)]