21680120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7039}}^1$

素因数の和:7068

約数の個数: 64

約数和(自身を含む): 60825600

約数和(自身を除く): 39145480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 7039, 14078, 28156, 35195, 49273, 56312, 70390, 77429, 98546, 140780, 154858, 197092, 246365, 281560, 309716, 387145, 394184, 492730, 542003, 619432, 774290, 985460, 1084006, 1548580, 1970920, 2168012, 2710015, 3097160, 4336024, 5420030, 10840060, 21680120]

約数ペア:

[(1, 21680120), (2, 10840060), (4, 5420030), (5, 4336024), (7, 3097160), (8, 2710015), (10, 2168012), (11, 1970920), (14, 1548580), (20, 1084006), (22, 985460), (28, 774290), (35, 619432), (40, 542003), (44, 492730), (55, 394184), (56, 387145), (70, 309716), (77, 281560), (88, 246365), (110, 197092), (140, 154858), (154, 140780), (220, 98546), (280, 77429), (308, 70390), (385, 56312), (440, 49273), (616, 35195), (770, 28156), (1540, 14078), (3080, 7039)]