21093688

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^3\times {\mathrm{283}}^1$

素因数の和:329

約数の個数: 64

約数和(自身を含む): 49893120

約数和(自身を除く): 28799432

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 121, 154, 242, 283, 308, 484, 566, 616, 847, 968, 1132, 1331, 1694, 1981, 2264, 2662, 3113, 3388, 3962, 5324, 6226, 6776, 7924, 9317, 10648, 12452, 15848, 18634, 21791, 24904, 34243, 37268, 43582, 68486, 74536, 87164, 136972, 174328, 239701, 273944, 376673, 479402, 753346, 958804, 1506692, 1917608, 2636711, 3013384, 5273422, 10546844, 21093688]

約数ペア:

[(1, 21093688), (2, 10546844), (4, 5273422), (7, 3013384), (8, 2636711), (11, 1917608), (14, 1506692), (22, 958804), (28, 753346), (44, 479402), (56, 376673), (77, 273944), (88, 239701), (121, 174328), (154, 136972), (242, 87164), (283, 74536), (308, 68486), (484, 43582), (566, 37268), (616, 34243), (847, 24904), (968, 21791), (1132, 18634), (1331, 15848), (1694, 12452), (1981, 10648), (2264, 9317), (2662, 7924), (3113, 6776), (3388, 6226), (3962, 5324)]