81038748

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{283}}^1\times {\mathrm{487}}^1$

素因数の和:791

約数の個数: 72

約数和(自身を含む): 221192832

約数和(自身を除く): 140154084

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 196, 283, 294, 487, 566, 588, 849, 974, 1132, 1461, 1698, 1948, 1981, 2922, 3396, 3409, 3962, 5844, 5943, 6818, 7924, 10227, 11886, 13636, 13867, 20454, 23772, 23863, 27734, 40908, 41601, 47726, 55468, 71589, 83202, 95452, 137821, 143178, 166404, 275642, 286356, 413463, 551284, 826926, 964747, 1653852, 1929494, 2894241, 3858988, 5788482, 6753229, 11576964, 13506458, 20259687, 27012916, 40519374, 81038748]

約数ペア:

[(1, 81038748), (2, 40519374), (3, 27012916), (4, 20259687), (6, 13506458), (7, 11576964), (12, 6753229), (14, 5788482), (21, 3858988), (28, 2894241), (42, 1929494), (49, 1653852), (84, 964747), (98, 826926), (147, 551284), (196, 413463), (283, 286356), (294, 275642), (487, 166404), (566, 143178), (588, 137821), (849, 95452), (974, 83202), (1132, 71589), (1461, 55468), (1698, 47726), (1948, 41601), (1981, 40908), (2922, 27734), (3396, 23863), (3409, 23772), (3962, 20454), (5844, 13867), (5943, 13636), (6818, 11886), (7924, 10227)]