19981554

素因数分解:

$2^1\times 3^1\times {\mathrm{37}}^1\times {\mathrm{90007}}^1$

素因数の和:90049

約数の個数: 16

約数和(自身を含む): 41043648

約数和(自身を除く): 21062094

約数列:

[1, 2, 3, 6, 37, 74, 111, 222, 90007, 180014, 270021, 540042, 3330259, 6660518, 9990777, 19981554]

約数ペア:

[(1, 19981554), (2, 9990777), (3, 6660518), (6, 3330259), (37, 540042), (74, 270021), (111, 180014), (222, 90007)]