20297984

素因数分解:

$2^8\times 7^1\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:311

約数の個数: 72

約数和(自身を含む): 47486208

約数和(自身を除く): 27188224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 128, 188, 224, 241, 256, 329, 376, 448, 482, 658, 752, 896, 964, 1316, 1504, 1687, 1792, 1928, 2632, 3008, 3374, 3856, 5264, 6016, 6748, 7712, 10528, 11327, 12032, 13496, 15424, 21056, 22654, 26992, 30848, 42112, 45308, 53984, 61696, 79289, 84224, 90616, 107968, 158578, 181232, 215936, 317156, 362464, 431872, 634312, 724928, 1268624, 1449856, 2537248, 2899712, 5074496, 10148992, 20297984]

約数ペア:

[(1, 20297984), (2, 10148992), (4, 5074496), (7, 2899712), (8, 2537248), (14, 1449856), (16, 1268624), (28, 724928), (32, 634312), (47, 431872), (56, 362464), (64, 317156), (94, 215936), (112, 181232), (128, 158578), (188, 107968), (224, 90616), (241, 84224), (256, 79289), (329, 61696), (376, 53984), (448, 45308), (482, 42112), (658, 30848), (752, 26992), (896, 22654), (964, 21056), (1316, 15424), (1504, 13496), (1687, 12032), (1792, 11327), (1928, 10528), (2632, 7712), (3008, 6748), (3374, 6016), (3856, 5264)]