20180280819

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{17987}}^1$

素因数の和:18219

約数の個数: 32

約数和(自身を含む): 28113085440

約数和(自身を除く): 7932804621

約数列:

[1, 3, 47, 73, 109, 141, 219, 327, 3431, 5123, 7957, 10293, 15369, 17987, 23871, 53961, 373979, 845389, 1121937, 1313051, 1960583, 2536167, 3939153, 5881749, 61713397, 92147401, 143122559, 185140191, 276442203, 429367677, 6726760273, 20180280819]

約数ペア:

[(1, 20180280819), (3, 6726760273), (47, 429367677), (73, 276442203), (109, 185140191), (141, 143122559), (219, 92147401), (327, 61713397), (3431, 5881749), (5123, 3939153), (7957, 2536167), (10293, 1960583), (15369, 1313051), (17987, 1121937), (23871, 845389), (53961, 373979)]