19990308

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1009}}^1$

素因数の和:1156

約数の個数: 48

約数和(自身を含む): 50677760

約数和(自身を除く): 30687452

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 127, 156, 254, 381, 508, 762, 1009, 1524, 1651, 2018, 3027, 3302, 4036, 4953, 6054, 6604, 9906, 12108, 13117, 19812, 26234, 39351, 52468, 78702, 128143, 157404, 256286, 384429, 512572, 768858, 1537716, 1665859, 3331718, 4997577, 6663436, 9995154, 19990308]

約数ペア:

[(1, 19990308), (2, 9995154), (3, 6663436), (4, 4997577), (6, 3331718), (12, 1665859), (13, 1537716), (26, 768858), (39, 512572), (52, 384429), (78, 256286), (127, 157404), (156, 128143), (254, 78702), (381, 52468), (508, 39351), (762, 26234), (1009, 19812), (1524, 13117), (1651, 12108), (2018, 9906), (3027, 6604), (3302, 6054), (4036, 4953)]