21452680

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11411}}^1$

素因数の和:11469

約数の個数: 32

約数和(自身を含む): 49299840

約数和(自身を除く): 27847160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11411, 22822, 45644, 57055, 91288, 114110, 228220, 456440, 536317, 1072634, 2145268, 2681585, 4290536, 5363170, 10726340, 21452680]

約数ペア:

[(1, 21452680), (2, 10726340), (4, 5363170), (5, 4290536), (8, 2681585), (10, 2145268), (20, 1072634), (40, 536317), (47, 456440), (94, 228220), (188, 114110), (235, 91288), (376, 57055), (470, 45644), (940, 22822), (1880, 11411)]