20688976

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2399}}^1$

素因数の和:2432

約数の個数: 60

約数和(自身を含む): 50889600

約数和(自身を除く): 30200624

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 49, 56, 77, 88, 98, 112, 154, 176, 196, 308, 392, 539, 616, 784, 1078, 1232, 2156, 2399, 4312, 4798, 8624, 9596, 16793, 19192, 26389, 33586, 38384, 52778, 67172, 105556, 117551, 134344, 184723, 211112, 235102, 268688, 369446, 422224, 470204, 738892, 940408, 1293061, 1477784, 1880816, 2586122, 2955568, 5172244, 10344488, 20688976]

約数ペア:

[(1, 20688976), (2, 10344488), (4, 5172244), (7, 2955568), (8, 2586122), (11, 1880816), (14, 1477784), (16, 1293061), (22, 940408), (28, 738892), (44, 470204), (49, 422224), (56, 369446), (77, 268688), (88, 235102), (98, 211112), (112, 184723), (154, 134344), (176, 117551), (196, 105556), (308, 67172), (392, 52778), (539, 38384), (616, 33586), (784, 26389), (1078, 19192), (1232, 16793), (2156, 9596), (2399, 8624), (4312, 4798)]