21877900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19889}}^1$

素因数の和:19914

約数の個数: 36

約数和(自身を含む): 51793560

約数和(自身を除く): 29915660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 19889, 39778, 79556, 99445, 198890, 218779, 397780, 437558, 497225, 875116, 994450, 1093895, 1988900, 2187790, 4375580, 5469475, 10938950, 21877900]

約数ペア:

[(1, 21877900), (2, 10938950), (4, 5469475), (5, 4375580), (10, 2187790), (11, 1988900), (20, 1093895), (22, 994450), (25, 875116), (44, 497225), (50, 437558), (55, 397780), (100, 218779), (110, 198890), (220, 99445), (275, 79556), (550, 39778), (1100, 19889)]