28031140

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{7043}}^1$

素因数の和:7251

約数の個数: 24

約数和(自身を含む): 59169600

約数和(自身を除く): 31138460

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 7043, 14086, 28172, 35215, 70430, 140860, 1401557, 2803114, 5606228, 7007785, 14015570, 28031140]

約数ペア:

[(1, 28031140), (2, 14015570), (4, 7007785), (5, 5606228), (10, 2803114), (20, 1401557), (199, 140860), (398, 70430), (796, 35215), (995, 28172), (1990, 14086), (3980, 7043)]