20579680

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1063}}^1$

素因数の和:1100

約数の個数: 72

約数和(自身を含む): 53491536

約数和(自身を除く): 32911856

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1063, 1210, 1760, 1936, 2126, 2420, 3872, 4252, 4840, 5315, 8504, 9680, 10630, 11693, 17008, 19360, 21260, 23386, 34016, 42520, 46772, 58465, 85040, 93544, 116930, 128623, 170080, 187088, 233860, 257246, 374176, 467720, 514492, 643115, 935440, 1028984, 1286230, 1870880, 2057968, 2572460, 4115936, 5144920, 10289840, 20579680]

約数ペア:

[(1, 20579680), (2, 10289840), (4, 5144920), (5, 4115936), (8, 2572460), (10, 2057968), (11, 1870880), (16, 1286230), (20, 1028984), (22, 935440), (32, 643115), (40, 514492), (44, 467720), (55, 374176), (80, 257246), (88, 233860), (110, 187088), (121, 170080), (160, 128623), (176, 116930), (220, 93544), (242, 85040), (352, 58465), (440, 46772), (484, 42520), (605, 34016), (880, 23386), (968, 21260), (1063, 19360), (1210, 17008), (1760, 11693), (1936, 10630), (2126, 9680), (2420, 8504), (3872, 5315), (4252, 4840)]