28321520

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8233}}^1$

素因数の和:8289

約数の個数: 40

約数和(自身を含む): 67387056

約数和(自身を除く): 39065536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8233, 16466, 32932, 41165, 65864, 82330, 131728, 164660, 329320, 354019, 658640, 708038, 1416076, 1770095, 2832152, 3540190, 5664304, 7080380, 14160760, 28321520]

約数ペア:

[(1, 28321520), (2, 14160760), (4, 7080380), (5, 5664304), (8, 3540190), (10, 2832152), (16, 1770095), (20, 1416076), (40, 708038), (43, 658640), (80, 354019), (86, 329320), (172, 164660), (215, 131728), (344, 82330), (430, 65864), (688, 41165), (860, 32932), (1720, 16466), (3440, 8233)]