18138640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{163}}^1$

素因数の和:296

約数の個数: 80

約数和(自身を含む): 46122048

約数和(自身を除く): 27983408

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 107, 130, 163, 208, 214, 260, 326, 428, 520, 535, 652, 815, 856, 1040, 1070, 1304, 1391, 1630, 1712, 2119, 2140, 2608, 2782, 3260, 4238, 4280, 5564, 6520, 6955, 8476, 8560, 10595, 11128, 13040, 13910, 16952, 17441, 21190, 22256, 27820, 33904, 34882, 42380, 55640, 69764, 84760, 87205, 111280, 139528, 169520, 174410, 226733, 279056, 348820, 453466, 697640, 906932, 1133665, 1395280, 1813864, 2267330, 3627728, 4534660, 9069320, 18138640]

約数ペア:

[(1, 18138640), (2, 9069320), (4, 4534660), (5, 3627728), (8, 2267330), (10, 1813864), (13, 1395280), (16, 1133665), (20, 906932), (26, 697640), (40, 453466), (52, 348820), (65, 279056), (80, 226733), (104, 174410), (107, 169520), (130, 139528), (163, 111280), (208, 87205), (214, 84760), (260, 69764), (326, 55640), (428, 42380), (520, 34882), (535, 33904), (652, 27820), (815, 22256), (856, 21190), (1040, 17441), (1070, 16952), (1304, 13910), (1391, 13040), (1630, 11128), (1712, 10595), (2119, 8560), (2140, 8476), (2608, 6955), (2782, 6520), (3260, 5564), (4238, 4280)]