19700945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{1979}}^1$

素因数の和:2176

約数の個数: 16

約数和(自身を含む): 25945920

約数和(自身を除く): 6244975

約数列:

[1, 5, 11, 55, 181, 905, 1979, 1991, 9895, 9955, 21769, 108845, 358199, 1790995, 3940189, 19700945]

約数ペア:

[(1, 19700945), (5, 3940189), (11, 1790995), (55, 358199), (181, 108845), (905, 21769), (1979, 9955), (1991, 9895)]