211318289

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{433}}^1$

素因数の和:657

約数の個数: 32

約数和(自身を含む): 270649344

約数和(自身を除く): 59331055

約数列:

[1, 7, 13, 31, 91, 173, 217, 403, 433, 1211, 2249, 2821, 3031, 5363, 5629, 13423, 15743, 37541, 39403, 69719, 74909, 93961, 174499, 488033, 524363, 973817, 1221493, 2322179, 6816719, 16255253, 30188327, 211318289]

約数ペア:

[(1, 211318289), (7, 30188327), (13, 16255253), (31, 6816719), (91, 2322179), (173, 1221493), (217, 973817), (403, 524363), (433, 488033), (1211, 174499), (2249, 93961), (2821, 74909), (3031, 69719), (5363, 39403), (5629, 37541), (13423, 15743)]