78420140

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{49633}}^1$

素因数の和:49721

約数の個数: 24

約数和(自身を含む): 166770240

約数和(自身を除く): 88350100

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 49633, 99266, 198532, 248165, 496330, 992660, 3921007, 7842014, 15684028, 19605035, 39210070, 78420140]

約数ペア:

[(1, 78420140), (2, 39210070), (4, 19605035), (5, 15684028), (10, 7842014), (20, 3921007), (79, 992660), (158, 496330), (316, 248165), (395, 198532), (790, 99266), (1580, 49633)]