21087220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13693}}^1$

素因数の和:13720

約数の個数: 48

約数和(自身を含む): 55214208

約数和(自身を除く): 34126988

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, 13693, 27386, 54772, 68465, 95851, 136930, 150623, 191702, 273860, 301246, 383404, 479255, 602492, 753115, 958510, 1054361, 1506230, 1917020, 2108722, 3012460, 4217444, 5271805, 10543610, 21087220]

約数ペア:

[(1, 21087220), (2, 10543610), (4, 5271805), (5, 4217444), (7, 3012460), (10, 2108722), (11, 1917020), (14, 1506230), (20, 1054361), (22, 958510), (28, 753115), (35, 602492), (44, 479255), (55, 383404), (70, 301246), (77, 273860), (110, 191702), (140, 150623), (154, 136930), (220, 95851), (308, 68465), (385, 54772), (770, 27386), (1540, 13693)]