20707440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6637}}^1$

素因数の和:6666

約数の個数: 80

約数和(自身を含む): 69141408

約数和(自身を除く): 48433968

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6637, 13274, 19911, 26548, 33185, 39822, 53096, 66370, 79644, 86281, 99555, 106192, 132740, 159288, 172562, 199110, 258843, 265480, 318576, 345124, 398220, 431405, 517686, 530960, 690248, 796440, 862810, 1035372, 1294215, 1380496, 1592880, 1725620, 2070744, 2588430, 3451240, 4141488, 5176860, 6902480, 10353720, 20707440]

約数ペア:

[(1, 20707440), (2, 10353720), (3, 6902480), (4, 5176860), (5, 4141488), (6, 3451240), (8, 2588430), (10, 2070744), (12, 1725620), (13, 1592880), (15, 1380496), (16, 1294215), (20, 1035372), (24, 862810), (26, 796440), (30, 690248), (39, 530960), (40, 517686), (48, 431405), (52, 398220), (60, 345124), (65, 318576), (78, 265480), (80, 258843), (104, 199110), (120, 172562), (130, 159288), (156, 132740), (195, 106192), (208, 99555), (240, 86281), (260, 79644), (312, 66370), (390, 53096), (520, 39822), (624, 33185), (780, 26548), (1040, 19911), (1560, 13274), (3120, 6637)]