20485860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{811}}^1$

素因数の和:1244

約数の個数: 48

約数和(自身を含む): 57567552

約数和(自身を除く): 37081692

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 421, 811, 842, 1263, 1622, 1684, 2105, 2433, 2526, 3244, 4055, 4210, 4866, 5052, 6315, 8110, 8420, 9732, 12165, 12630, 16220, 24330, 25260, 48660, 341431, 682862, 1024293, 1365724, 1707155, 2048586, 3414310, 4097172, 5121465, 6828620, 10242930, 20485860]

約数ペア:

[(1, 20485860), (2, 10242930), (3, 6828620), (4, 5121465), (5, 4097172), (6, 3414310), (10, 2048586), (12, 1707155), (15, 1365724), (20, 1024293), (30, 682862), (60, 341431), (421, 48660), (811, 25260), (842, 24330), (1263, 16220), (1622, 12630), (1684, 12165), (2105, 9732), (2433, 8420), (2526, 8110), (3244, 6315), (4055, 5052), (4210, 4866)]