20051228

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{1979}}^1$

素因数の和:2149

約数の個数: 24

約数和(自身を含む): 37422000

約数和(自身を除く): 17370772

約数列:

[1, 2, 4, 17, 34, 68, 149, 298, 596, 1979, 2533, 3958, 5066, 7916, 10132, 33643, 67286, 134572, 294871, 589742, 1179484, 5012807, 10025614, 20051228]

約数ペア:

[(1, 20051228), (2, 10025614), (4, 5012807), (17, 1179484), (34, 589742), (68, 294871), (149, 134572), (298, 67286), (596, 33643), (1979, 10132), (2533, 7916), (3958, 5066)]