28873640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16787}}^1$

素因数の和:16841

約数の個数: 32

約数和(自身を含む): 66480480

約数和(自身を除く): 37606840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16787, 33574, 67148, 83935, 134296, 167870, 335740, 671480, 721841, 1443682, 2887364, 3609205, 5774728, 7218410, 14436820, 28873640]

約数ペア:

[(1, 28873640), (2, 14436820), (4, 7218410), (5, 5774728), (8, 3609205), (10, 2887364), (20, 1443682), (40, 721841), (43, 671480), (86, 335740), (172, 167870), (215, 134296), (344, 83935), (430, 67148), (860, 33574), (1720, 16787)]