991410820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{383}}^1\times {\mathrm{4463}}^1$

素因数の和:4884

約数の個数: 48

約数和(自身を含む): 2159861760

約数和(自身を除く): 1168450940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 383, 580, 766, 1532, 1915, 3830, 4463, 7660, 8926, 11107, 17852, 22214, 22315, 44428, 44630, 55535, 89260, 111070, 129427, 222140, 258854, 517708, 647135, 1294270, 1709329, 2588540, 3418658, 6837316, 8546645, 17093290, 34186580, 49570541, 99141082, 198282164, 247852705, 495705410, 991410820]

約数ペア:

[(1, 991410820), (2, 495705410), (4, 247852705), (5, 198282164), (10, 99141082), (20, 49570541), (29, 34186580), (58, 17093290), (116, 8546645), (145, 6837316), (290, 3418658), (383, 2588540), (580, 1709329), (766, 1294270), (1532, 647135), (1915, 517708), (3830, 258854), (4463, 222140), (7660, 129427), (8926, 111070), (11107, 89260), (17852, 55535), (22214, 44630), (22315, 44428)]