20564500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3739}}^1$

素因数の和:3769

約数の個数: 48

約数和(自身を含む): 49008960

約数和(自身を除く): 28444460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3739, 5500, 7478, 14956, 18695, 37390, 41129, 74780, 82258, 93475, 164516, 186950, 205645, 373900, 411290, 467375, 822580, 934750, 1028225, 1869500, 2056450, 4112900, 5141125, 10282250, 20564500]

約数ペア:

[(1, 20564500), (2, 10282250), (4, 5141125), (5, 4112900), (10, 2056450), (11, 1869500), (20, 1028225), (22, 934750), (25, 822580), (44, 467375), (50, 411290), (55, 373900), (100, 205645), (110, 186950), (125, 164516), (220, 93475), (250, 82258), (275, 74780), (500, 41129), (550, 37390), (1100, 18695), (1375, 14956), (2750, 7478), (3739, 5500)]