21520260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{119557}}^1$

素因数の和:119572

約数の個数: 36

約数和(自身を含む): 65278668

約数和(自身を除く): 43758408

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 119557, 239114, 358671, 478228, 597785, 717342, 1076013, 1195570, 1434684, 1793355, 2152026, 2391140, 3586710, 4304052, 5380065, 7173420, 10760130, 21520260]

約数ペア:

[(1, 21520260), (2, 10760130), (3, 7173420), (4, 5380065), (5, 4304052), (6, 3586710), (9, 2391140), (10, 2152026), (12, 1793355), (15, 1434684), (18, 1195570), (20, 1076013), (30, 717342), (36, 597785), (45, 478228), (60, 358671), (90, 239114), (180, 119557)]