80606960

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{20563}}^1$

素因数の和:20590

約数の個数: 60

約数和(自身を含む): 218019528

約数和(自身を除く): 137412568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 20563, 41126, 82252, 102815, 143941, 164504, 205630, 287882, 329008, 411260, 575764, 719705, 822520, 1007587, 1151528, 1439410, 1645040, 2015174, 2303056, 2878820, 4030348, 5037935, 5757640, 8060696, 10075870, 11515280, 16121392, 20151740, 40303480, 80606960]

約数ペア:

[(1, 80606960), (2, 40303480), (4, 20151740), (5, 16121392), (7, 11515280), (8, 10075870), (10, 8060696), (14, 5757640), (16, 5037935), (20, 4030348), (28, 2878820), (35, 2303056), (40, 2015174), (49, 1645040), (56, 1439410), (70, 1151528), (80, 1007587), (98, 822520), (112, 719705), (140, 575764), (196, 411260), (245, 329008), (280, 287882), (392, 205630), (490, 164504), (560, 143941), (784, 102815), (980, 82252), (1960, 41126), (3920, 20563)]