278038878

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{641}}^1$

素因数の和:809

約数の個数: 64

約数和(自身を含む): 616073472

約数和(自身を除く): 338034594

約数列:

[1, 2, 3, 6, 13, 26, 39, 67, 78, 83, 134, 166, 201, 249, 402, 498, 641, 871, 1079, 1282, 1742, 1923, 2158, 2613, 3237, 3846, 5226, 5561, 6474, 8333, 11122, 16666, 16683, 24999, 33366, 42947, 49998, 53203, 72293, 85894, 106406, 128841, 144586, 159609, 216879, 257682, 319218, 433758, 558311, 691639, 1116622, 1383278, 1674933, 2074917, 3349866, 3564601, 4149834, 7129202, 10693803, 21387606, 46339813, 92679626, 139019439, 278038878]

約数ペア:

[(1, 278038878), (2, 139019439), (3, 92679626), (6, 46339813), (13, 21387606), (26, 10693803), (39, 7129202), (67, 4149834), (78, 3564601), (83, 3349866), (134, 2074917), (166, 1674933), (201, 1383278), (249, 1116622), (402, 691639), (498, 558311), (641, 433758), (871, 319218), (1079, 257682), (1282, 216879), (1742, 159609), (1923, 144586), (2158, 128841), (2613, 106406), (3237, 85894), (3846, 72293), (5226, 53203), (5561, 49998), (6474, 42947), (8333, 33366), (11122, 24999), (16666, 16683)]