19940336

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2591}}^1$

素因数の和:2649

約数の個数: 40

約数和(自身を含む): 42747264

約数和(自身を除く): 22806928

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 208, 296, 481, 592, 962, 1924, 2591, 3848, 5182, 7696, 10364, 20728, 33683, 41456, 67366, 95867, 134732, 191734, 269464, 383468, 538928, 766936, 1246271, 1533872, 2492542, 4985084, 9970168, 19940336]

約数ペア:

[(1, 19940336), (2, 9970168), (4, 4985084), (8, 2492542), (13, 1533872), (16, 1246271), (26, 766936), (37, 538928), (52, 383468), (74, 269464), (104, 191734), (148, 134732), (208, 95867), (296, 67366), (481, 41456), (592, 33683), (962, 20728), (1924, 10364), (2591, 7696), (3848, 5182)]