20731408

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{233}}^1$

素因数の和:391

約数の個数: 40

約数和(自身を含む): 41434848

約数和(自身を除く): 20703440

約数列:

[1, 2, 4, 8, 16, 67, 83, 134, 166, 233, 268, 332, 466, 536, 664, 932, 1072, 1328, 1864, 3728, 5561, 11122, 15611, 19339, 22244, 31222, 38678, 44488, 62444, 77356, 88976, 124888, 154712, 249776, 309424, 1295713, 2591426, 5182852, 10365704, 20731408]

約数ペア:

[(1, 20731408), (2, 10365704), (4, 5182852), (8, 2591426), (16, 1295713), (67, 309424), (83, 249776), (134, 154712), (166, 124888), (233, 88976), (268, 77356), (332, 62444), (466, 44488), (536, 38678), (664, 31222), (932, 22244), (1072, 19339), (1328, 15611), (1864, 11122), (3728, 5561)]