80729680

素因数分解:

$2^4\times 5^1\times {\mathrm{1009121}}^1$

素因数の和:1009134

約数の個数: 20

約数和(自身を含む): 187696692

約数和(自身を除く): 106967012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1009121, 2018242, 4036484, 5045605, 8072968, 10091210, 16145936, 20182420, 40364840, 80729680]

約数ペア:

[(1, 80729680), (2, 40364840), (4, 20182420), (5, 16145936), (8, 10091210), (10, 8072968), (16, 5045605), (20, 4036484), (40, 2018242), (80, 1009121)]