18111280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1871}}^1$

素因数の和:1906

約数の個数: 60

約数和(自身を含む): 46309536

約数和(自身を除く): 28198256

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1871, 1936, 2420, 3742, 4840, 7484, 9355, 9680, 14968, 18710, 20581, 29936, 37420, 41162, 74840, 82324, 102905, 149680, 164648, 205810, 226391, 329296, 411620, 452782, 823240, 905564, 1131955, 1646480, 1811128, 2263910, 3622256, 4527820, 9055640, 18111280]

約数ペア:

[(1, 18111280), (2, 9055640), (4, 4527820), (5, 3622256), (8, 2263910), (10, 1811128), (11, 1646480), (16, 1131955), (20, 905564), (22, 823240), (40, 452782), (44, 411620), (55, 329296), (80, 226391), (88, 205810), (110, 164648), (121, 149680), (176, 102905), (220, 82324), (242, 74840), (440, 41162), (484, 37420), (605, 29936), (880, 20581), (968, 18710), (1210, 14968), (1871, 9680), (1936, 9355), (2420, 7484), (3742, 4840)]