12739720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{263}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 33073920

約数和(自身を除く): 20334200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 173, 263, 280, 346, 526, 692, 865, 1052, 1211, 1315, 1384, 1730, 1841, 2104, 2422, 2630, 3460, 3682, 4844, 5260, 6055, 6920, 7364, 9205, 9688, 10520, 12110, 14728, 18410, 24220, 36820, 45499, 48440, 73640, 90998, 181996, 227495, 318493, 363992, 454990, 636986, 909980, 1273972, 1592465, 1819960, 2547944, 3184930, 6369860, 12739720]

約数ペア:

[(1, 12739720), (2, 6369860), (4, 3184930), (5, 2547944), (7, 1819960), (8, 1592465), (10, 1273972), (14, 909980), (20, 636986), (28, 454990), (35, 363992), (40, 318493), (56, 227495), (70, 181996), (140, 90998), (173, 73640), (263, 48440), (280, 45499), (346, 36820), (526, 24220), (692, 18410), (865, 14728), (1052, 12110), (1211, 10520), (1315, 9688), (1384, 9205), (1730, 7364), (1841, 6920), (2104, 6055), (2422, 5260), (2630, 4844), (3460, 3682)]