20391210

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{10789}}^1$

素因数の和:10812

約数の個数: 64

約数和(自身を含む): 62150400

約数和(自身を除く): 41759190

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 10789, 21578, 32367, 53945, 64734, 75523, 97101, 107890, 151046, 161835, 194202, 226569, 291303, 323670, 377615, 453138, 485505, 582606, 679707, 755230, 971010, 1132845, 1359414, 1456515, 2039121, 2265690, 2913030, 3398535, 4078242, 6797070, 10195605, 20391210]

約数ペア:

[(1, 20391210), (2, 10195605), (3, 6797070), (5, 4078242), (6, 3398535), (7, 2913030), (9, 2265690), (10, 2039121), (14, 1456515), (15, 1359414), (18, 1132845), (21, 971010), (27, 755230), (30, 679707), (35, 582606), (42, 485505), (45, 453138), (54, 377615), (63, 323670), (70, 291303), (90, 226569), (105, 194202), (126, 161835), (135, 151046), (189, 107890), (210, 97101), (270, 75523), (315, 64734), (378, 53945), (630, 32367), (945, 21578), (1890, 10789)]