19968804

素因数分解:

$2^2\times 3^2\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:297

約数の個数: 72

約数和(自身を含む): 52651872

約数和(自身を除く): 32683068

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 41, 82, 83, 123, 163, 164, 166, 246, 249, 326, 332, 369, 489, 492, 498, 652, 738, 747, 978, 996, 1467, 1476, 1494, 1956, 2934, 2988, 3403, 5868, 6683, 6806, 10209, 13366, 13529, 13612, 20049, 20418, 26732, 27058, 30627, 40098, 40587, 40836, 54116, 60147, 61254, 80196, 81174, 120294, 121761, 122508, 162348, 240588, 243522, 487044, 554689, 1109378, 1664067, 2218756, 3328134, 4992201, 6656268, 9984402, 19968804]

約数ペア:

[(1, 19968804), (2, 9984402), (3, 6656268), (4, 4992201), (6, 3328134), (9, 2218756), (12, 1664067), (18, 1109378), (36, 554689), (41, 487044), (82, 243522), (83, 240588), (123, 162348), (163, 122508), (164, 121761), (166, 120294), (246, 81174), (249, 80196), (326, 61254), (332, 60147), (369, 54116), (489, 40836), (492, 40587), (498, 40098), (652, 30627), (738, 27058), (747, 26732), (978, 20418), (996, 20049), (1467, 13612), (1476, 13529), (1494, 13366), (1956, 10209), (2934, 6806), (2988, 6683), (3403, 5868)]