20777560

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1931}}^1$

素因数の和:2211

約数の個数: 32

約数和(自身を含む): 46947600

約数和(自身を除く): 26170040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 1931, 2152, 2690, 3862, 5380, 7724, 9655, 10760, 15448, 19310, 38620, 77240, 519439, 1038878, 2077756, 2597195, 4155512, 5194390, 10388780, 20777560]

約数ペア:

[(1, 20777560), (2, 10388780), (4, 5194390), (5, 4155512), (8, 2597195), (10, 2077756), (20, 1038878), (40, 519439), (269, 77240), (538, 38620), (1076, 19310), (1345, 15448), (1931, 10760), (2152, 9655), (2690, 7724), (3862, 5380)]