20639696

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1523}}^1$

素因数の和:1560

約数の個数: 60

約数和(自身を含む): 50267616

約数和(自身を除く): 29627920

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 121, 154, 176, 242, 308, 484, 616, 847, 968, 1232, 1523, 1694, 1936, 3046, 3388, 6092, 6776, 10661, 12184, 13552, 16753, 21322, 24368, 33506, 42644, 67012, 85288, 117271, 134024, 170576, 184283, 234542, 268048, 368566, 469084, 737132, 938168, 1289981, 1474264, 1876336, 2579962, 2948528, 5159924, 10319848, 20639696]

約数ペア:

[(1, 20639696), (2, 10319848), (4, 5159924), (7, 2948528), (8, 2579962), (11, 1876336), (14, 1474264), (16, 1289981), (22, 938168), (28, 737132), (44, 469084), (56, 368566), (77, 268048), (88, 234542), (112, 184283), (121, 170576), (154, 134024), (176, 117271), (242, 85288), (308, 67012), (484, 42644), (616, 33506), (847, 24368), (968, 21322), (1232, 16753), (1523, 13552), (1694, 12184), (1936, 10661), (3046, 6776), (3388, 6092)]