12640760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{28729}}^1$

素因数の和:28751

約数の個数: 32

約数和(自身を含む): 31028400

約数和(自身を除く): 18387640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 28729, 57458, 114916, 143645, 229832, 287290, 316019, 574580, 632038, 1149160, 1264076, 1580095, 2528152, 3160190, 6320380, 12640760]

約数ペア:

[(1, 12640760), (2, 6320380), (4, 3160190), (5, 2528152), (8, 1580095), (10, 1264076), (11, 1149160), (20, 632038), (22, 574580), (40, 316019), (44, 287290), (55, 229832), (88, 143645), (110, 114916), (220, 57458), (440, 28729)]