20890518

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:509

約数の個数: 64

約数和(自身を含む): 49496832

約数和(自身を除く): 28606314

約数列:

[1, 2, 3, 6, 11, 17, 22, 33, 34, 43, 51, 66, 86, 102, 129, 187, 258, 374, 433, 473, 561, 731, 866, 946, 1122, 1299, 1419, 1462, 2193, 2598, 2838, 4386, 4763, 7361, 8041, 9526, 14289, 14722, 16082, 18619, 22083, 24123, 28578, 37238, 44166, 48246, 55857, 80971, 111714, 161942, 204809, 242913, 316523, 409618, 485826, 614427, 633046, 949569, 1228854, 1899138, 3481753, 6963506, 10445259, 20890518]

約数ペア:

[(1, 20890518), (2, 10445259), (3, 6963506), (6, 3481753), (11, 1899138), (17, 1228854), (22, 949569), (33, 633046), (34, 614427), (43, 485826), (51, 409618), (66, 316523), (86, 242913), (102, 204809), (129, 161942), (187, 111714), (258, 80971), (374, 55857), (433, 48246), (473, 44166), (561, 37238), (731, 28578), (866, 24123), (946, 22083), (1122, 18619), (1299, 16082), (1419, 14722), (1462, 14289), (2193, 9526), (2598, 8041), (2838, 7361), (4386, 4763)]