20417552

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1429}}^1$

素因数の和:1503

約数の個数: 40

約数和(自身を含む): 42556800

約数和(自身を除く): 22139248

約数列:

[1, 2, 4, 8, 16, 19, 38, 47, 76, 94, 152, 188, 304, 376, 752, 893, 1429, 1786, 2858, 3572, 5716, 7144, 11432, 14288, 22864, 27151, 54302, 67163, 108604, 134326, 217208, 268652, 434416, 537304, 1074608, 1276097, 2552194, 5104388, 10208776, 20417552]

約数ペア:

[(1, 20417552), (2, 10208776), (4, 5104388), (8, 2552194), (16, 1276097), (19, 1074608), (38, 537304), (47, 434416), (76, 268652), (94, 217208), (152, 134326), (188, 108604), (304, 67163), (376, 54302), (752, 27151), (893, 22864), (1429, 14288), (1786, 11432), (2858, 7144), (3572, 5716)]