21737980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{98809}}^1$

素因数の和:98829

約数の個数: 24

約数和(自身を含む): 49800240

約数和(自身を除く): 28062260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 98809, 197618, 395236, 494045, 988090, 1086899, 1976180, 2173798, 4347596, 5434495, 10868990, 21737980]

約数ペア:

[(1, 21737980), (2, 10868990), (4, 5434495), (5, 4347596), (10, 2173798), (11, 1976180), (20, 1086899), (22, 988090), (44, 494045), (55, 395236), (110, 197618), (220, 98809)]