21186237

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 30818304

約数和(自身を除く): 9632067

約数列:

[1, 3, 31, 37, 47, 93, 111, 131, 141, 393, 1147, 1457, 1739, 3441, 4061, 4371, 4847, 5217, 6157, 12183, 14541, 18471, 53909, 150257, 161727, 190867, 227809, 450771, 572601, 683427, 7062079, 21186237]

約数ペア:

[(1, 21186237), (3, 7062079), (31, 683427), (37, 572601), (47, 450771), (93, 227809), (111, 190867), (131, 161727), (141, 150257), (393, 53909), (1147, 18471), (1457, 14541), (1739, 12183), (3441, 6157), (4061, 5217), (4371, 4847)]