30981940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{140827}}^1$

素因数の和:140847

約数の個数: 24

約数和(自身を含む): 70977312

約数和(自身を除く): 39995372

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 140827, 281654, 563308, 704135, 1408270, 1549097, 2816540, 3098194, 6196388, 7745485, 15490970, 30981940]

約数ペア:

[(1, 30981940), (2, 15490970), (4, 7745485), (5, 6196388), (10, 3098194), (11, 2816540), (20, 1549097), (22, 1408270), (44, 704135), (55, 563308), (110, 281654), (220, 140827)]