20978646

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1217}}^1$

素因数の和:1265

約数の個数: 48

約数和(自身を含む): 48145104

約数和(自身を除く): 27166458

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 51, 78, 102, 169, 221, 338, 442, 507, 663, 1014, 1217, 1326, 2434, 2873, 3651, 5746, 7302, 8619, 15821, 17238, 20689, 31642, 41378, 47463, 62067, 94926, 124134, 205673, 268957, 411346, 537914, 617019, 806871, 1234038, 1613742, 3496441, 6992882, 10489323, 20978646]

約数ペア:

[(1, 20978646), (2, 10489323), (3, 6992882), (6, 3496441), (13, 1613742), (17, 1234038), (26, 806871), (34, 617019), (39, 537914), (51, 411346), (78, 268957), (102, 205673), (169, 124134), (221, 94926), (338, 62067), (442, 47463), (507, 41378), (663, 31642), (1014, 20689), (1217, 17238), (1326, 15821), (2434, 8619), (2873, 7302), (3651, 5746)]