81401920

素因数分解:

$2^6\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2003}}^1$

素因数の和:2147

約数の個数: 56

約数和(自身を含む): 195462144

約数和(自身を除く): 114060224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 160, 254, 320, 508, 635, 1016, 1270, 2003, 2032, 2540, 4006, 4064, 5080, 8012, 8128, 10015, 10160, 16024, 20030, 20320, 32048, 40060, 40640, 64096, 80120, 128192, 160240, 254381, 320480, 508762, 640960, 1017524, 1271905, 2035048, 2543810, 4070096, 5087620, 8140192, 10175240, 16280384, 20350480, 40700960, 81401920]

約数ペア:

[(1, 81401920), (2, 40700960), (4, 20350480), (5, 16280384), (8, 10175240), (10, 8140192), (16, 5087620), (20, 4070096), (32, 2543810), (40, 2035048), (64, 1271905), (80, 1017524), (127, 640960), (160, 508762), (254, 320480), (320, 254381), (508, 160240), (635, 128192), (1016, 80120), (1270, 64096), (2003, 40640), (2032, 40060), (2540, 32048), (4006, 20320), (4064, 20030), (5080, 16024), (8012, 10160), (8128, 10015)]