18737480

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^2\times {\mathrm{557}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 43741620

約数和(自身を除く): 25004140

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 557, 580, 841, 1114, 1160, 1682, 2228, 2785, 3364, 4205, 4456, 5570, 6728, 8410, 11140, 16153, 16820, 22280, 32306, 33640, 64612, 80765, 129224, 161530, 323060, 468437, 646120, 936874, 1873748, 2342185, 3747496, 4684370, 9368740, 18737480]

約数ペア:

[(1, 18737480), (2, 9368740), (4, 4684370), (5, 3747496), (8, 2342185), (10, 1873748), (20, 936874), (29, 646120), (40, 468437), (58, 323060), (116, 161530), (145, 129224), (232, 80765), (290, 64612), (557, 33640), (580, 32306), (841, 22280), (1114, 16820), (1160, 16153), (1682, 11140), (2228, 8410), (2785, 6728), (3364, 5570), (4205, 4456)]