20978530

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{463}}^1$

素因数の和:690

約数の個数: 32

約数和(自身を含む): 39688704

約数和(自身を除く): 18710174

約数列:

[1, 2, 5, 10, 23, 46, 115, 197, 230, 394, 463, 926, 985, 1970, 2315, 4531, 4630, 9062, 10649, 21298, 22655, 45310, 53245, 91211, 106490, 182422, 456055, 912110, 2097853, 4195706, 10489265, 20978530]

約数ペア:

[(1, 20978530), (2, 10489265), (5, 4195706), (10, 2097853), (23, 912110), (46, 456055), (115, 182422), (197, 106490), (230, 91211), (394, 53245), (463, 45310), (926, 22655), (985, 21298), (1970, 10649), (2315, 9062), (4531, 4630)]