20153180

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16519}}^1$

素因数の和:16589

約数の個数: 24

約数和(自身を含む): 43018080

約数和(自身を除く): 22864900

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16519, 33038, 66076, 82595, 165190, 330380, 1007659, 2015318, 4030636, 5038295, 10076590, 20153180]

約数ペア:

[(1, 20153180), (2, 10076590), (4, 5038295), (5, 4030636), (10, 2015318), (20, 1007659), (61, 330380), (122, 165190), (244, 82595), (305, 66076), (610, 33038), (1220, 16519)]