19998086

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{239}}^1$

素因数の和:388

約数の個数: 32

約数和(自身を含む): 33592320

約数和(自身を除く): 13594234

約数列:

[1, 2, 17, 23, 34, 46, 107, 214, 239, 391, 478, 782, 1819, 2461, 3638, 4063, 4922, 5497, 8126, 10994, 25573, 41837, 51146, 83674, 93449, 186898, 434741, 588179, 869482, 1176358, 9999043, 19998086]

約数ペア:

[(1, 19998086), (2, 9999043), (17, 1176358), (23, 869482), (34, 588179), (46, 434741), (107, 186898), (214, 93449), (239, 83674), (391, 51146), (478, 41837), (782, 25573), (1819, 10994), (2461, 8126), (3638, 5497), (4063, 4922)]