20565207916

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{61}}^2\times {\mathrm{601}}^1$

素因数の和:768

約数の個数: 108

約数和(自身を含む): 42404554920

約数和(自身を除く): 21839347004

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 61, 76, 121, 122, 209, 242, 244, 418, 484, 601, 671, 836, 1159, 1202, 1342, 2299, 2318, 2404, 2684, 3721, 4598, 4636, 6611, 7381, 7442, 9196, 11419, 12749, 13222, 14762, 14884, 22838, 25498, 26444, 29524, 36661, 40931, 45676, 50996, 70699, 72721, 73322, 81862, 125609, 140239, 141398, 145442, 146644, 163724, 251218, 280478, 282796, 290884, 403271, 450241, 502436, 560956, 696559, 777689, 806542, 900482, 1381699, 1393118, 1555378, 1613084, 1800964, 2236321, 2763398, 2786236, 3110756, 4435981, 4472642, 5526796, 7662149, 8554579, 8871962, 8945284, 15324298, 17109158, 17743924, 24599531, 30648596, 34218316, 42490099, 49199062, 84283639, 84980198, 98398124, 168567278, 169960396, 270594841, 337134556, 467391089, 541189682, 934782178, 1082379364, 1869564356, 5141301979, 10282603958, 20565207916]

約数ペア:

[(1, 20565207916), (2, 10282603958), (4, 5141301979), (11, 1869564356), (19, 1082379364), (22, 934782178), (38, 541189682), (44, 467391089), (61, 337134556), (76, 270594841), (121, 169960396), (122, 168567278), (209, 98398124), (242, 84980198), (244, 84283639), (418, 49199062), (484, 42490099), (601, 34218316), (671, 30648596), (836, 24599531), (1159, 17743924), (1202, 17109158), (1342, 15324298), (2299, 8945284), (2318, 8871962), (2404, 8554579), (2684, 7662149), (3721, 5526796), (4598, 4472642), (4636, 4435981), (6611, 3110756), (7381, 2786236), (7442, 2763398), (9196, 2236321), (11419, 1800964), (12749, 1613084), (13222, 1555378), (14762, 1393118), (14884, 1381699), (22838, 900482), (25498, 806542), (26444, 777689), (29524, 696559), (36661, 560956), (40931, 502436), (45676, 450241), (50996, 403271), (70699, 290884), (72721, 282796), (73322, 280478), (81862, 251218), (125609, 163724), (140239, 146644), (141398, 145442)]