21395770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{194507}}^1$

素因数の和:194525

約数の個数: 16

約数和(自身を含む): 42013728

約数和(自身を除く): 20617958

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 194507, 389014, 972535, 1945070, 2139577, 4279154, 10697885, 21395770]

約数ペア:

[(1, 21395770), (2, 10697885), (5, 4279154), (10, 2139577), (11, 1945070), (22, 972535), (55, 389014), (110, 194507)]