128584780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{523}}^1\times {\mathrm{647}}^1$

素因数の和:1198

約数の個数: 48

約数和(自身を含む): 285223680

約数和(自身を除く): 156638900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 523, 647, 1046, 1294, 2092, 2588, 2615, 3235, 5230, 6470, 9937, 10460, 12293, 12940, 19874, 24586, 39748, 49172, 49685, 61465, 99370, 122930, 198740, 245860, 338381, 676762, 1353524, 1691905, 3383810, 6429239, 6767620, 12858478, 25716956, 32146195, 64292390, 128584780]

約数ペア:

[(1, 128584780), (2, 64292390), (4, 32146195), (5, 25716956), (10, 12858478), (19, 6767620), (20, 6429239), (38, 3383810), (76, 1691905), (95, 1353524), (190, 676762), (380, 338381), (523, 245860), (647, 198740), (1046, 122930), (1294, 99370), (2092, 61465), (2588, 49685), (2615, 49172), (3235, 39748), (5230, 24586), (6470, 19874), (9937, 12940), (10460, 12293)]