82859620

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 177408000

約数和(自身を除く): 94548380

約数列:

[1, 2, 4, 5, 10, 20, 109, 191, 199, 218, 382, 398, 436, 545, 764, 796, 955, 995, 1090, 1910, 1990, 2180, 3820, 3980, 20819, 21691, 38009, 41638, 43382, 76018, 83276, 86764, 104095, 108455, 152036, 190045, 208190, 216910, 380090, 416380, 433820, 760180, 4142981, 8285962, 16571924, 20714905, 41429810, 82859620]

約数ペア:

[(1, 82859620), (2, 41429810), (4, 20714905), (5, 16571924), (10, 8285962), (20, 4142981), (109, 760180), (191, 433820), (199, 416380), (218, 380090), (382, 216910), (398, 208190), (436, 190045), (545, 152036), (764, 108455), (796, 104095), (955, 86764), (995, 83276), (1090, 76018), (1910, 43382), (1990, 41638), (2180, 38009), (3820, 21691), (3980, 20819)]