18764680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3877}}^1$

素因数の和:3910

約数の個数: 48

約数和(自身を含む): 46419660

約数和(自身を除く): 27654980

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, 3877, 4840, 7754, 15508, 19385, 31016, 38770, 42647, 77540, 85294, 155080, 170588, 213235, 341176, 426470, 469117, 852940, 938234, 1705880, 1876468, 2345585, 3752936, 4691170, 9382340, 18764680]

約数ペア:

[(1, 18764680), (2, 9382340), (4, 4691170), (5, 3752936), (8, 2345585), (10, 1876468), (11, 1705880), (20, 938234), (22, 852940), (40, 469117), (44, 426470), (55, 341176), (88, 213235), (110, 170588), (121, 155080), (220, 85294), (242, 77540), (440, 42647), (484, 38770), (605, 31016), (968, 19385), (1210, 15508), (2420, 7754), (3877, 4840)]