278804570

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{20947}}^1$

素因数の和:20987

約数の個数: 32

約数和(自身を含む): 552021696

約数和(自身を除く): 273217126

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 1331, 2662, 6655, 13310, 20947, 41894, 104735, 209470, 230417, 460834, 1152085, 2304170, 2534587, 5069174, 12672935, 25345870, 27880457, 55760914, 139402285, 278804570]

約数ペア:

[(1, 278804570), (2, 139402285), (5, 55760914), (10, 27880457), (11, 25345870), (22, 12672935), (55, 5069174), (110, 2534587), (121, 2304170), (242, 1152085), (605, 460834), (1210, 230417), (1331, 209470), (2662, 104735), (6655, 41894), (13310, 20947)]