28142480

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20693}}^1$

素因数の和:20723

約数の個数: 40

約数和(自身を含む): 69283512

約数和(自身を除く): 41141032

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 20693, 41386, 82772, 103465, 165544, 206930, 331088, 351781, 413860, 703562, 827720, 1407124, 1655440, 1758905, 2814248, 3517810, 5628496, 7035620, 14071240, 28142480]

約数ペア:

[(1, 28142480), (2, 14071240), (4, 7035620), (5, 5628496), (8, 3517810), (10, 2814248), (16, 1758905), (17, 1655440), (20, 1407124), (34, 827720), (40, 703562), (68, 413860), (80, 351781), (85, 331088), (136, 206930), (170, 165544), (272, 103465), (340, 82772), (680, 41386), (1360, 20693)]