28394320

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4999}}^1$

素因数の和:5083

約数の個数: 40

約数和(自身を含む): 66960000

約数和(自身を除く): 38565680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 4999, 5680, 9998, 19996, 24995, 39992, 49990, 79984, 99980, 199960, 354929, 399920, 709858, 1419716, 1774645, 2839432, 3549290, 5678864, 7098580, 14197160, 28394320]

約数ペア:

[(1, 28394320), (2, 14197160), (4, 7098580), (5, 5678864), (8, 3549290), (10, 2839432), (16, 1774645), (20, 1419716), (40, 709858), (71, 399920), (80, 354929), (142, 199960), (284, 99980), (355, 79984), (568, 49990), (710, 39992), (1136, 24995), (1420, 19996), (2840, 9998), (4999, 5680)]