211078959

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{17981}}^1$

素因数の和:18047

約数の個数: 32

約数和(自身を含む): 354461184

約数和(自身を除く): 143382225

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 3913, 11739, 17981, 53943, 125867, 233753, 377601, 701259, 773183, 1636271, 2319549, 4908813, 5412281, 10051379, 16236843, 30154137, 70359653, 211078959]

約数ペア:

[(1, 211078959), (3, 70359653), (7, 30154137), (13, 16236843), (21, 10051379), (39, 5412281), (43, 4908813), (91, 2319549), (129, 1636271), (273, 773183), (301, 701259), (559, 377601), (903, 233753), (1677, 125867), (3913, 53943), (11739, 17981)]