80122220

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{577}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 173039328

約数和(自身を除く): 92917108

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 131, 212, 262, 265, 524, 530, 577, 655, 1060, 1154, 1310, 2308, 2620, 2885, 5770, 6943, 11540, 13886, 27772, 30581, 34715, 61162, 69430, 75587, 122324, 138860, 151174, 152905, 302348, 305810, 377935, 611620, 755870, 1511740, 4006111, 8012222, 16024444, 20030555, 40061110, 80122220]

約数ペア:

[(1, 80122220), (2, 40061110), (4, 20030555), (5, 16024444), (10, 8012222), (20, 4006111), (53, 1511740), (106, 755870), (131, 611620), (212, 377935), (262, 305810), (265, 302348), (524, 152905), (530, 151174), (577, 138860), (655, 122324), (1060, 75587), (1154, 69430), (1310, 61162), (2308, 34715), (2620, 30581), (2885, 27772), (5770, 13886), (6943, 11540)]