19021808

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{839}}^1$

素因数の和:969

約数の個数: 40

約数和(自身を含む): 40101600

約数和(自身を除く): 21079792

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 109, 208, 218, 436, 839, 872, 1417, 1678, 1744, 2834, 3356, 5668, 6712, 10907, 11336, 13424, 21814, 22672, 43628, 87256, 91451, 174512, 182902, 365804, 731608, 1188863, 1463216, 2377726, 4755452, 9510904, 19021808]

約数ペア:

[(1, 19021808), (2, 9510904), (4, 4755452), (8, 2377726), (13, 1463216), (16, 1188863), (26, 731608), (52, 365804), (104, 182902), (109, 174512), (208, 91451), (218, 87256), (436, 43628), (839, 22672), (872, 21814), (1417, 13424), (1678, 11336), (1744, 10907), (2834, 6712), (3356, 5668)]