21511160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48889}}^1$

素因数の和:48911

約数の個数: 32

約数和(自身を含む): 52801200

約数和(自身を除く): 31290040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48889, 97778, 195556, 244445, 391112, 488890, 537779, 977780, 1075558, 1955560, 2151116, 2688895, 4302232, 5377790, 10755580, 21511160]

約数ペア:

[(1, 21511160), (2, 10755580), (4, 5377790), (5, 4302232), (8, 2688895), (10, 2151116), (11, 1955560), (20, 1075558), (22, 977780), (40, 537779), (44, 488890), (55, 391112), (88, 244445), (110, 195556), (220, 97778), (440, 48889)]