198422020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{162641}}^1$

素因数の和:162711

約数の個数: 24

約数和(自身を含む): 423519768

約数和(自身を除く): 225097748

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 162641, 325282, 650564, 813205, 1626410, 3252820, 9921101, 19842202, 39684404, 49605505, 99211010, 198422020]

約数ペア:

[(1, 198422020), (2, 99211010), (4, 49605505), (5, 39684404), (10, 19842202), (20, 9921101), (61, 3252820), (122, 1626410), (244, 813205), (305, 650564), (610, 325282), (1220, 162641)]