13440680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2777}}^1$

素因数の和:2810

約数の個数: 48

約数和(自身を含む): 33252660

約数和(自身を除く): 19811980

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 2777, 4840, 5554, 11108, 13885, 22216, 27770, 30547, 55540, 61094, 111080, 122188, 152735, 244376, 305470, 336017, 610940, 672034, 1221880, 1344068, 1680085, 2688136, 3360170, 6720340, 13440680]

約数ペア:

[(1, 13440680), (2, 6720340), (4, 3360170), (5, 2688136), (8, 1680085), (10, 1344068), (11, 1221880), (20, 672034), (22, 610940), (40, 336017), (44, 305470), (55, 244376), (88, 152735), (110, 122188), (121, 111080), (220, 61094), (242, 55540), (440, 30547), (484, 27770), (605, 22216), (968, 13885), (1210, 11108), (2420, 5554), (2777, 4840)]