20348900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1423}}^1$

素因数の和:1461

約数の個数: 72

約数和(自身を含む): 51913344

約数和(自身を除く): 31564444

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 130, 143, 220, 260, 275, 286, 325, 550, 572, 650, 715, 1100, 1300, 1423, 1430, 2846, 2860, 3575, 5692, 7115, 7150, 14230, 14300, 15653, 18499, 28460, 31306, 35575, 36998, 62612, 71150, 73996, 78265, 92495, 142300, 156530, 184990, 203489, 313060, 369980, 391325, 406978, 462475, 782650, 813956, 924950, 1017445, 1565300, 1849900, 2034890, 4069780, 5087225, 10174450, 20348900]

約数ペア:

[(1, 20348900), (2, 10174450), (4, 5087225), (5, 4069780), (10, 2034890), (11, 1849900), (13, 1565300), (20, 1017445), (22, 924950), (25, 813956), (26, 782650), (44, 462475), (50, 406978), (52, 391325), (55, 369980), (65, 313060), (100, 203489), (110, 184990), (130, 156530), (143, 142300), (220, 92495), (260, 78265), (275, 73996), (286, 71150), (325, 62612), (550, 36998), (572, 35575), (650, 31306), (715, 28460), (1100, 18499), (1300, 15653), (1423, 14300), (1430, 14230), (2846, 7150), (2860, 7115), (3575, 5692)]