28710220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:311

約数の個数: 96

約数和(自身を含む): 76317696

約数和(自身を除く): 47607476

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 103, 110, 140, 154, 181, 206, 220, 308, 362, 385, 412, 515, 721, 724, 770, 905, 1030, 1133, 1267, 1442, 1540, 1810, 1991, 2060, 2266, 2534, 2884, 3605, 3620, 3982, 4532, 5068, 5665, 6335, 7210, 7931, 7964, 9955, 11330, 12670, 13937, 14420, 15862, 18643, 19910, 22660, 25340, 27874, 31724, 37286, 39655, 39820, 55748, 69685, 74572, 79310, 93215, 130501, 139370, 158620, 186430, 205073, 261002, 278740, 372860, 410146, 522004, 652505, 820292, 1025365, 1305010, 1435511, 2050730, 2610020, 2871022, 4101460, 5742044, 7177555, 14355110, 28710220]

約数ペア:

[(1, 28710220), (2, 14355110), (4, 7177555), (5, 5742044), (7, 4101460), (10, 2871022), (11, 2610020), (14, 2050730), (20, 1435511), (22, 1305010), (28, 1025365), (35, 820292), (44, 652505), (55, 522004), (70, 410146), (77, 372860), (103, 278740), (110, 261002), (140, 205073), (154, 186430), (181, 158620), (206, 139370), (220, 130501), (308, 93215), (362, 79310), (385, 74572), (412, 69685), (515, 55748), (721, 39820), (724, 39655), (770, 37286), (905, 31724), (1030, 27874), (1133, 25340), (1267, 22660), (1442, 19910), (1540, 18643), (1810, 15862), (1991, 14420), (2060, 13937), (2266, 12670), (2534, 11330), (2884, 9955), (3605, 7964), (3620, 7931), (3982, 7210), (4532, 6335), (5068, 5665)]