21536680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48947}}^1$

素因数の和:48969

約数の個数: 32

約数和(自身を含む): 52863840

約数和(自身を除く): 31327160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48947, 97894, 195788, 244735, 391576, 489470, 538417, 978940, 1076834, 1957880, 2153668, 2692085, 4307336, 5384170, 10768340, 21536680]

約数ペア:

[(1, 21536680), (2, 10768340), (4, 5384170), (5, 4307336), (8, 2692085), (10, 2153668), (11, 1957880), (20, 1076834), (22, 978940), (40, 538417), (44, 489470), (55, 391576), (88, 244735), (110, 195788), (220, 97894), (440, 48947)]