208917940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{135661}}^1$

素因数の和:135688

約数の個数: 48

約数和(自身を含む): 546989184

約数和(自身を除く): 338071244

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, 135661, 271322, 542644, 678305, 949627, 1356610, 1492271, 1899254, 2713220, 2984542, 3798508, 4748135, 5969084, 7461355, 9496270, 10445897, 14922710, 18992540, 20891794, 29845420, 41783588, 52229485, 104458970, 208917940]

約数ペア:

[(1, 208917940), (2, 104458970), (4, 52229485), (5, 41783588), (7, 29845420), (10, 20891794), (11, 18992540), (14, 14922710), (20, 10445897), (22, 9496270), (28, 7461355), (35, 5969084), (44, 4748135), (55, 3798508), (70, 2984542), (77, 2713220), (110, 1899254), (140, 1492271), (154, 1356610), (220, 949627), (308, 678305), (385, 542644), (770, 271322), (1540, 135661)]