20103975

素因数分解:

$3^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:664

約数の個数: 36

約数和(自身を含む): 36270000

約数和(自身を除く): 16166025

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 199, 225, 449, 597, 995, 1347, 1791, 2245, 2985, 4041, 4975, 6735, 8955, 11225, 14925, 20205, 33675, 44775, 89351, 101025, 268053, 446755, 804159, 1340265, 2233775, 4020795, 6701325, 20103975]

約数ペア:

[(1, 20103975), (3, 6701325), (5, 4020795), (9, 2233775), (15, 1340265), (25, 804159), (45, 446755), (75, 268053), (199, 101025), (225, 89351), (449, 44775), (597, 33675), (995, 20205), (1347, 14925), (1791, 11225), (2245, 8955), (2985, 6735), (4041, 4975)]