990494320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{651641}}^1$

素因数の和:651673

約数の個数: 40

約数和(自身を含む): 2424108240

約数和(自身を除く): 1433613920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 651641, 1303282, 2606564, 3258205, 5213128, 6516410, 10426256, 12381179, 13032820, 24762358, 26065640, 49524716, 52131280, 61905895, 99049432, 123811790, 198098864, 247623580, 495247160, 990494320]

約数ペア:

[(1, 990494320), (2, 495247160), (4, 247623580), (5, 198098864), (8, 123811790), (10, 99049432), (16, 61905895), (19, 52131280), (20, 49524716), (38, 26065640), (40, 24762358), (76, 13032820), (80, 12381179), (95, 10426256), (152, 6516410), (190, 5213128), (304, 3258205), (380, 2606564), (760, 1303282), (1520, 651641)]