21126290

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{111191}}^1$

素因数の和:111217

約数の個数: 16

約数和(自身を含む): 40029120

約数和(自身を除く): 18902830

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 111191, 222382, 555955, 1111910, 2112629, 4225258, 10563145, 21126290]

約数ペア:

[(1, 21126290), (2, 10563145), (5, 4225258), (10, 2112629), (19, 1111910), (38, 555955), (95, 222382), (190, 111191)]