12720780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23557}}^1$

素因数の和:23575

約数の個数: 48

約数和(自身を含む): 39577440

約数和(自身を除く): 26856660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 23557, 47114, 70671, 94228, 117785, 141342, 212013, 235570, 282684, 353355, 424026, 471140, 636039, 706710, 848052, 1060065, 1272078, 1413420, 2120130, 2544156, 3180195, 4240260, 6360390, 12720780]

約数ペア:

[(1, 12720780), (2, 6360390), (3, 4240260), (4, 3180195), (5, 2544156), (6, 2120130), (9, 1413420), (10, 1272078), (12, 1060065), (15, 848052), (18, 706710), (20, 636039), (27, 471140), (30, 424026), (36, 353355), (45, 282684), (54, 235570), (60, 212013), (90, 141342), (108, 117785), (135, 94228), (180, 70671), (270, 47114), (540, 23557)]