21446425

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{857}}^1$

素因数の和:898

約数の個数: 48

約数和(自身を含む): 35747712

約数和(自身を除く): 14301287

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 143, 175, 275, 325, 385, 455, 715, 857, 1001, 1925, 2275, 3575, 4285, 5005, 5999, 9427, 11141, 21425, 25025, 29995, 47135, 55705, 65989, 77987, 122551, 149975, 235675, 278525, 329945, 389935, 612755, 857857, 1649725, 1949675, 3063775, 4289285, 21446425]

約数ペア:

[(1, 21446425), (5, 4289285), (7, 3063775), (11, 1949675), (13, 1649725), (25, 857857), (35, 612755), (55, 389935), (65, 329945), (77, 278525), (91, 235675), (143, 149975), (175, 122551), (275, 77987), (325, 65989), (385, 55705), (455, 47135), (715, 29995), (857, 25025), (1001, 21425), (1925, 11141), (2275, 9427), (3575, 5999), (4285, 5005)]