80720220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{192191}}^1$

素因数の和:192210

約数の個数: 48

約数和(自身を含む): 258306048

約数和(自身を除く): 177585828

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 192191, 384382, 576573, 768764, 960955, 1153146, 1345337, 1921910, 2306292, 2690674, 2882865, 3843820, 4036011, 5381348, 5765730, 6726685, 8072022, 11531460, 13453370, 16144044, 20180055, 26906740, 40360110, 80720220]

約数ペア:

[(1, 80720220), (2, 40360110), (3, 26906740), (4, 20180055), (5, 16144044), (6, 13453370), (7, 11531460), (10, 8072022), (12, 6726685), (14, 5765730), (15, 5381348), (20, 4036011), (21, 3843820), (28, 2882865), (30, 2690674), (35, 2306292), (42, 1921910), (60, 1345337), (70, 1153146), (84, 960955), (105, 768764), (140, 576573), (210, 384382), (420, 192191)]