21298090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193619}}^1$

素因数の和:193637

約数の個数: 16

約数和(自身を含む): 41821920

約数和(自身を除く): 20523830

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 193619, 387238, 968095, 1936190, 2129809, 4259618, 10649045, 21298090]

約数ペア:

[(1, 21298090), (2, 10649045), (5, 4259618), (10, 2129809), (11, 1936190), (22, 968095), (55, 387238), (110, 193619)]