40640905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1\times {\mathrm{1021}}^1$

素因数の和:1464

約数の個数: 16

約数和(自身を含む): 51508800

約数和(自身を除く): 10867895

約数列:

[1, 5, 19, 95, 419, 1021, 2095, 5105, 7961, 19399, 39805, 96995, 427799, 2138995, 8128181, 40640905]

約数ペア:

[(1, 40640905), (5, 8128181), (19, 2138995), (95, 427799), (419, 96995), (1021, 39805), (2095, 19399), (5105, 7961)]