20820780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{38557}}^1$

素因数の和:38575

約数の個数: 48

約数和(自身を含む): 64777440

約数和(自身を除く): 43956660

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, 38557, 77114, 115671, 154228, 192785, 231342, 347013, 385570, 462684, 578355, 694026, 771140, 1041039, 1156710, 1388052, 1735065, 2082078, 2313420, 3470130, 4164156, 5205195, 6940260, 10410390, 20820780]

約数ペア:

[(1, 20820780), (2, 10410390), (3, 6940260), (4, 5205195), (5, 4164156), (6, 3470130), (9, 2313420), (10, 2082078), (12, 1735065), (15, 1388052), (18, 1156710), (20, 1041039), (27, 771140), (30, 694026), (36, 578355), (45, 462684), (54, 385570), (60, 347013), (90, 231342), (108, 192785), (135, 154228), (180, 115671), (270, 77114), (540, 38557)]