20731888

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1451}}^1$

素因数の和:1525

約数の個数: 40

約数和(自身を含む): 43211520

約数和(自身を除く): 22479632

約数列:

[1, 2, 4, 8, 16, 19, 38, 47, 76, 94, 152, 188, 304, 376, 752, 893, 1451, 1786, 2902, 3572, 5804, 7144, 11608, 14288, 23216, 27569, 55138, 68197, 110276, 136394, 220552, 272788, 441104, 545576, 1091152, 1295743, 2591486, 5182972, 10365944, 20731888]

約数ペア:

[(1, 20731888), (2, 10365944), (4, 5182972), (8, 2591486), (16, 1295743), (19, 1091152), (38, 545576), (47, 441104), (76, 272788), (94, 220552), (152, 136394), (188, 110276), (304, 68197), (376, 55138), (752, 27569), (893, 23216), (1451, 14288), (1786, 11608), (2902, 7144), (3572, 5804)]