21406784

素因数分解:

$2^6\times 7^1\times {\mathrm{71}}^1\times {\mathrm{673}}^1$

素因数の和:763

約数の個数: 56

約数和(自身を含む): 49304448

約数和(自身を除く): 27897664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 71, 112, 142, 224, 284, 448, 497, 568, 673, 994, 1136, 1346, 1988, 2272, 2692, 3976, 4544, 4711, 5384, 7952, 9422, 10768, 15904, 18844, 21536, 31808, 37688, 43072, 47783, 75376, 95566, 150752, 191132, 301504, 334481, 382264, 668962, 764528, 1337924, 1529056, 2675848, 3058112, 5351696, 10703392, 21406784]

約数ペア:

[(1, 21406784), (2, 10703392), (4, 5351696), (7, 3058112), (8, 2675848), (14, 1529056), (16, 1337924), (28, 764528), (32, 668962), (56, 382264), (64, 334481), (71, 301504), (112, 191132), (142, 150752), (224, 95566), (284, 75376), (448, 47783), (497, 43072), (568, 37688), (673, 31808), (994, 21536), (1136, 18844), (1346, 15904), (1988, 10768), (2272, 9422), (2692, 7952), (3976, 5384), (4544, 4711)]