21383373

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 32481792

約数和(自身を除く): 11098419

約数列:

[1, 3, 11, 33, 37, 83, 111, 211, 249, 407, 633, 913, 1221, 2321, 2739, 3071, 6963, 7807, 9213, 17513, 23421, 33781, 52539, 85877, 101343, 192643, 257631, 577929, 647981, 1943943, 7127791, 21383373]

約数ペア:

[(1, 21383373), (3, 7127791), (11, 1943943), (33, 647981), (37, 577929), (83, 257631), (111, 192643), (211, 101343), (249, 85877), (407, 52539), (633, 33781), (913, 23421), (1221, 17513), (2321, 9213), (2739, 7807), (3071, 6963)]