19958540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3853}}^1$

素因数の和:3906

約数の個数: 48

約数和(自身を含む): 49207872

約数和(自身を除く): 29249332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 3853, 5180, 7706, 15412, 19265, 26971, 38530, 53942, 77060, 107884, 134855, 142561, 269710, 285122, 539420, 570244, 712805, 997927, 1425610, 1995854, 2851220, 3991708, 4989635, 9979270, 19958540]

約数ペア:

[(1, 19958540), (2, 9979270), (4, 4989635), (5, 3991708), (7, 2851220), (10, 1995854), (14, 1425610), (20, 997927), (28, 712805), (35, 570244), (37, 539420), (70, 285122), (74, 269710), (140, 142561), (148, 134855), (185, 107884), (259, 77060), (370, 53942), (518, 38530), (740, 26971), (1036, 19265), (1295, 15412), (2590, 7706), (3853, 5180)]