199915655

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{557}}^1\times {\mathrm{3121}}^1$

素因数の和:3706

約数の個数: 16

約数和(自身を含む): 250858944

約数和(自身を除く): 50943289

約数列:

[1, 5, 23, 115, 557, 2785, 3121, 12811, 15605, 64055, 71783, 358915, 1738397, 8691985, 39983131, 199915655]

約数ペア:

[(1, 199915655), (5, 39983131), (23, 8691985), (115, 1738397), (557, 358915), (2785, 71783), (3121, 64055), (12811, 15605)]