20805800

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4523}}^1$

素因数の和:4562

約数の個数: 48

約数和(自身を含む): 50487840

約数和(自身を除く): 29682040

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 200, 230, 460, 575, 920, 1150, 2300, 4523, 4600, 9046, 18092, 22615, 36184, 45230, 90460, 104029, 113075, 180920, 208058, 226150, 416116, 452300, 520145, 832232, 904600, 1040290, 2080580, 2600725, 4161160, 5201450, 10402900, 20805800]

約数ペア:

[(1, 20805800), (2, 10402900), (4, 5201450), (5, 4161160), (8, 2600725), (10, 2080580), (20, 1040290), (23, 904600), (25, 832232), (40, 520145), (46, 452300), (50, 416116), (92, 226150), (100, 208058), (115, 180920), (184, 113075), (200, 104029), (230, 90460), (460, 45230), (575, 36184), (920, 22615), (1150, 18092), (2300, 9046), (4523, 4600)]