21563080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7001}}^1$

素因数の和:7030

約数の個数: 64

約数和(自身を含む): 60497280

約数和(自身を除く): 38934200

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, 7001, 14002, 28004, 35005, 49007, 56008, 70010, 77011, 98014, 140020, 154022, 196028, 245035, 280040, 308044, 385055, 392056, 490070, 539077, 616088, 770110, 980140, 1078154, 1540220, 1960280, 2156308, 2695385, 3080440, 4312616, 5390770, 10781540, 21563080]

約数ペア:

[(1, 21563080), (2, 10781540), (4, 5390770), (5, 4312616), (7, 3080440), (8, 2695385), (10, 2156308), (11, 1960280), (14, 1540220), (20, 1078154), (22, 980140), (28, 770110), (35, 616088), (40, 539077), (44, 490070), (55, 392056), (56, 385055), (70, 308044), (77, 280040), (88, 245035), (110, 196028), (140, 154022), (154, 140020), (220, 98014), (280, 77011), (308, 70010), (385, 56008), (440, 49007), (616, 35005), (770, 28004), (1540, 14002), (3080, 7001)]