19389944

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 24155656

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 53, 56, 94, 106, 139, 188, 212, 278, 329, 371, 376, 424, 556, 658, 742, 973, 1112, 1316, 1484, 1946, 2491, 2632, 2968, 3892, 4982, 6533, 7367, 7784, 9964, 13066, 14734, 17437, 19928, 26132, 29468, 34874, 45731, 51569, 52264, 58936, 69748, 91462, 103138, 139496, 182924, 206276, 346249, 365848, 412552, 692498, 1384996, 2423743, 2769992, 4847486, 9694972, 19389944]

約数ペア:

[(1, 19389944), (2, 9694972), (4, 4847486), (7, 2769992), (8, 2423743), (14, 1384996), (28, 692498), (47, 412552), (53, 365848), (56, 346249), (94, 206276), (106, 182924), (139, 139496), (188, 103138), (212, 91462), (278, 69748), (329, 58936), (371, 52264), (376, 51569), (424, 45731), (556, 34874), (658, 29468), (742, 26132), (973, 19928), (1112, 17437), (1316, 14734), (1484, 13066), (1946, 9964), (2491, 7784), (2632, 7367), (2968, 6533), (3892, 4982)]