28335280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8237}}^1$

素因数の和:8293

約数の個数: 40

約数和(自身を含む): 67419792

約数和(自身を除く): 39084512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8237, 16474, 32948, 41185, 65896, 82370, 131792, 164740, 329480, 354191, 658960, 708382, 1416764, 1770955, 2833528, 3541910, 5667056, 7083820, 14167640, 28335280]

約数ペア:

[(1, 28335280), (2, 14167640), (4, 7083820), (5, 5667056), (8, 3541910), (10, 2833528), (16, 1770955), (20, 1416764), (40, 708382), (43, 658960), (80, 354191), (86, 329480), (172, 164740), (215, 131792), (344, 82370), (430, 65896), (688, 41185), (860, 32948), (1720, 16474), (3440, 8237)]