19142120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 46008000

約数和(自身を除く): 26865880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 89, 95, 152, 178, 190, 283, 356, 380, 445, 566, 712, 760, 890, 1132, 1415, 1691, 1780, 2264, 2830, 3382, 3560, 5377, 5660, 6764, 8455, 10754, 11320, 13528, 16910, 21508, 25187, 26885, 33820, 43016, 50374, 53770, 67640, 100748, 107540, 125935, 201496, 215080, 251870, 478553, 503740, 957106, 1007480, 1914212, 2392765, 3828424, 4785530, 9571060, 19142120]

約数ペア:

[(1, 19142120), (2, 9571060), (4, 4785530), (5, 3828424), (8, 2392765), (10, 1914212), (19, 1007480), (20, 957106), (38, 503740), (40, 478553), (76, 251870), (89, 215080), (95, 201496), (152, 125935), (178, 107540), (190, 100748), (283, 67640), (356, 53770), (380, 50374), (445, 43016), (566, 33820), (712, 26885), (760, 25187), (890, 21508), (1132, 16910), (1415, 13528), (1691, 11320), (1780, 10754), (2264, 8455), (2830, 6764), (3382, 5660), (3560, 5377)]