12940240

素因数分解:

$2^4\times 5^1\times {\mathrm{161753}}^1$

素因数の和:161766

約数の個数: 20

約数和(自身を含む): 30086244

約数和(自身を除く): 17146004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 161753, 323506, 647012, 808765, 1294024, 1617530, 2588048, 3235060, 6470120, 12940240]

約数ペア:

[(1, 12940240), (2, 6470120), (4, 3235060), (5, 2588048), (8, 1617530), (10, 1294024), (16, 808765), (20, 647012), (40, 323506), (80, 161753)]