28737940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18661}}^1$

素因数の和:18688

約数の個数: 48

約数和(自身を含む): 75245184

約数和(自身を除く): 46507244

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 18661, 37322, 74644, 93305, 130627, 186610, 205271, 261254, 373220, 410542, 522508, 653135, 821084, 1026355, 1306270, 1436897, 2052710, 2612540, 2873794, 4105420, 5747588, 7184485, 14368970, 28737940]

約数ペア:

[(1, 28737940), (2, 14368970), (4, 7184485), (5, 5747588), (7, 4105420), (10, 2873794), (11, 2612540), (14, 2052710), (20, 1436897), (22, 1306270), (28, 1026355), (35, 821084), (44, 653135), (55, 522508), (70, 410542), (77, 373220), (110, 261254), (140, 205271), (154, 186610), (220, 130627), (308, 93305), (385, 74644), (770, 37322), (1540, 18661)]