18888736

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:737

約数の個数: 48

約数和(自身を含む): 40037760

約数和(自身を除く): 21149024

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 47, 76, 94, 152, 188, 304, 376, 608, 661, 752, 893, 1322, 1504, 1786, 2644, 3572, 5288, 7144, 10576, 12559, 14288, 21152, 25118, 28576, 31067, 50236, 62134, 100472, 124268, 200944, 248536, 401888, 497072, 590273, 994144, 1180546, 2361092, 4722184, 9444368, 18888736]

約数ペア:

[(1, 18888736), (2, 9444368), (4, 4722184), (8, 2361092), (16, 1180546), (19, 994144), (32, 590273), (38, 497072), (47, 401888), (76, 248536), (94, 200944), (152, 124268), (188, 100472), (304, 62134), (376, 50236), (608, 31067), (661, 28576), (752, 25118), (893, 21152), (1322, 14288), (1504, 12559), (1786, 10576), (2644, 7144), (3572, 5288)]