21681290

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1433}}^1$

素因数の和:1546

約数の個数: 32

約数和(自身を含む): 41815440

約数和(自身を除く): 20134150

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 170, 178, 445, 890, 1433, 1513, 2866, 3026, 7165, 7565, 14330, 15130, 24361, 48722, 121805, 127537, 243610, 255074, 637685, 1275370, 2168129, 4336258, 10840645, 21681290]

約数ペア:

[(1, 21681290), (2, 10840645), (5, 4336258), (10, 2168129), (17, 1275370), (34, 637685), (85, 255074), (89, 243610), (170, 127537), (178, 121805), (445, 48722), (890, 24361), (1433, 15130), (1513, 14330), (2866, 7565), (3026, 7165)]