219521480

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{811}}^1$

素因数の和:990

約数の個数: 64

約数和(自身を含む): 506882880

約数和(自身を除く): 287361400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 101, 134, 202, 268, 335, 404, 505, 536, 670, 808, 811, 1010, 1340, 1622, 2020, 2680, 3244, 4040, 4055, 6488, 6767, 8110, 13534, 16220, 27068, 32440, 33835, 54136, 54337, 67670, 81911, 108674, 135340, 163822, 217348, 270680, 271685, 327644, 409555, 434696, 543370, 655288, 819110, 1086740, 1638220, 2173480, 3276440, 5488037, 10976074, 21952148, 27440185, 43904296, 54880370, 109760740, 219521480]

約数ペア:

[(1, 219521480), (2, 109760740), (4, 54880370), (5, 43904296), (8, 27440185), (10, 21952148), (20, 10976074), (40, 5488037), (67, 3276440), (101, 2173480), (134, 1638220), (202, 1086740), (268, 819110), (335, 655288), (404, 543370), (505, 434696), (536, 409555), (670, 327644), (808, 271685), (811, 270680), (1010, 217348), (1340, 163822), (1622, 135340), (2020, 108674), (2680, 81911), (3244, 67670), (4040, 54337), (4055, 54136), (6488, 33835), (6767, 32440), (8110, 27068), (13534, 16220)]