19700590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21649}}^1$

素因数の和:21676

約数の個数: 32

約数和(自身を含む): 43646400

約数和(自身を除く): 23945810

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 21649, 43298, 108245, 151543, 216490, 281437, 303086, 562874, 757715, 1407185, 1515430, 1970059, 2814370, 3940118, 9850295, 19700590]

約数ペア:

[(1, 19700590), (2, 9850295), (5, 3940118), (7, 2814370), (10, 1970059), (13, 1515430), (14, 1407185), (26, 757715), (35, 562874), (65, 303086), (70, 281437), (91, 216490), (130, 151543), (182, 108245), (455, 43298), (910, 21649)]