20878440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{15817}}^1$

素因数の和:15842

約数の個数: 64

約数和(自身を含む): 68333760

約数和(自身を除く): 47455320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320, 15817, 31634, 47451, 63268, 79085, 94902, 126536, 158170, 173987, 189804, 237255, 316340, 347974, 379608, 474510, 521961, 632680, 695948, 869935, 949020, 1043922, 1391896, 1739870, 1898040, 2087844, 2609805, 3479740, 4175688, 5219610, 6959480, 10439220, 20878440]

約数ペア:

[(1, 20878440), (2, 10439220), (3, 6959480), (4, 5219610), (5, 4175688), (6, 3479740), (8, 2609805), (10, 2087844), (11, 1898040), (12, 1739870), (15, 1391896), (20, 1043922), (22, 949020), (24, 869935), (30, 695948), (33, 632680), (40, 521961), (44, 474510), (55, 379608), (60, 347974), (66, 316340), (88, 237255), (110, 189804), (120, 173987), (132, 158170), (165, 126536), (220, 94902), (264, 79085), (330, 63268), (440, 47451), (660, 31634), (1320, 15817)]