8980453900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{19961}}^1$

素因数の和:20395

約数の個数: 72

約数和(自身を含む): 21312229680

約数和(自身を除く): 12331775780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 409, 550, 818, 1100, 1636, 2045, 4090, 4499, 8180, 8998, 10225, 17996, 19961, 20450, 22495, 39922, 40900, 44990, 79844, 89980, 99805, 112475, 199610, 219571, 224950, 399220, 439142, 449900, 499025, 878284, 998050, 1097855, 1996100, 2195710, 4391420, 5489275, 8164049, 10978550, 16328098, 21957100, 32656196, 40820245, 81640490, 89804539, 163280980, 179609078, 204101225, 359218156, 408202450, 449022695, 816404900, 898045390, 1796090780, 2245113475, 4490226950, 8980453900]

約数ペア:

[(1, 8980453900), (2, 4490226950), (4, 2245113475), (5, 1796090780), (10, 898045390), (11, 816404900), (20, 449022695), (22, 408202450), (25, 359218156), (44, 204101225), (50, 179609078), (55, 163280980), (100, 89804539), (110, 81640490), (220, 40820245), (275, 32656196), (409, 21957100), (550, 16328098), (818, 10978550), (1100, 8164049), (1636, 5489275), (2045, 4391420), (4090, 2195710), (4499, 1996100), (8180, 1097855), (8998, 998050), (10225, 878284), (17996, 499025), (19961, 449900), (20450, 439142), (22495, 399220), (39922, 224950), (40900, 219571), (44990, 199610), (79844, 112475), (89980, 99805)]