21395066

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 19973254

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 89, 98, 154, 178, 223, 446, 539, 623, 979, 1078, 1246, 1561, 1958, 2453, 3122, 4361, 4906, 6853, 8722, 10927, 13706, 17171, 19847, 21854, 34342, 39694, 47971, 95942, 120197, 138929, 218317, 240394, 277858, 436634, 972503, 1528219, 1945006, 3056438, 10697533, 21395066]

約数ペア:

[(1, 21395066), (2, 10697533), (7, 3056438), (11, 1945006), (14, 1528219), (22, 972503), (49, 436634), (77, 277858), (89, 240394), (98, 218317), (154, 138929), (178, 120197), (223, 95942), (446, 47971), (539, 39694), (623, 34342), (979, 21854), (1078, 19847), (1246, 17171), (1561, 13706), (1958, 10927), (2453, 8722), (3122, 6853), (4361, 4906)]