20686288

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{9721}}^1$

素因数の和:9755

約数の個数: 40

約数和(自身を含む): 48221120

約数和(自身を除く): 27534832

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 9721, 19442, 38884, 68047, 77768, 136094, 155536, 184699, 272188, 369398, 544376, 738796, 1088752, 1292893, 1477592, 2585786, 2955184, 5171572, 10343144, 20686288]

約数ペア:

[(1, 20686288), (2, 10343144), (4, 5171572), (7, 2955184), (8, 2585786), (14, 1477592), (16, 1292893), (19, 1088752), (28, 738796), (38, 544376), (56, 369398), (76, 272188), (112, 184699), (133, 155536), (152, 136094), (266, 77768), (304, 68047), (532, 38884), (1064, 19442), (2128, 9721)]