20405354

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{8803}}^1$

素因数の和:8885

約数の個数: 16

約数和(自身を含む): 32750880

約数和(自身を除く): 12345526

約数列:

[1, 2, 19, 38, 61, 122, 1159, 2318, 8803, 17606, 167257, 334514, 536983, 1073966, 10202677, 20405354]

約数ペア:

[(1, 20405354), (2, 10202677), (19, 1073966), (38, 536983), (61, 334514), (122, 167257), (1159, 17606), (2318, 8803)]