8111780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^2\times {\mathrm{109}}^1$

素因数の和:240

約数の個数: 36

約数和(自身を含む): 17477460

約数和(自身を除く): 9365680

約数列:

[1, 2, 4, 5, 10, 20, 61, 109, 122, 218, 244, 305, 436, 545, 610, 1090, 1220, 2180, 3721, 6649, 7442, 13298, 14884, 18605, 26596, 33245, 37210, 66490, 74420, 132980, 405589, 811178, 1622356, 2027945, 4055890, 8111780]

約数ペア:

[(1, 8111780), (2, 4055890), (4, 2027945), (5, 1622356), (10, 811178), (20, 405589), (61, 132980), (109, 74420), (122, 66490), (218, 37210), (244, 33245), (305, 26596), (436, 18605), (545, 14884), (610, 13298), (1090, 7442), (1220, 6649), (2180, 3721)]