18231880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11117}}^1$

素因数の和:11169

約数の個数: 32

約数和(自身を含む): 42026040

約数和(自身を除く): 23794160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11117, 22234, 44468, 55585, 88936, 111170, 222340, 444680, 455797, 911594, 1823188, 2278985, 3646376, 4557970, 9115940, 18231880]

約数ペア:

[(1, 18231880), (2, 9115940), (4, 4557970), (5, 3646376), (8, 2278985), (10, 1823188), (20, 911594), (40, 455797), (41, 444680), (82, 222340), (164, 111170), (205, 88936), (328, 55585), (410, 44468), (820, 22234), (1640, 11117)]