18985904

素因数分解:

$2^4\times 7^1\times {\mathrm{283}}^1\times {\mathrm{599}}^1$

素因数の和:897

約数の個数: 40

約数和(自身を含む): 42259200

約数和(自身を除く): 23273296

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 283, 566, 599, 1132, 1198, 1981, 2264, 2396, 3962, 4193, 4528, 4792, 7924, 8386, 9584, 15848, 16772, 31696, 33544, 67088, 169517, 339034, 678068, 1186619, 1356136, 2373238, 2712272, 4746476, 9492952, 18985904]

約数ペア:

[(1, 18985904), (2, 9492952), (4, 4746476), (7, 2712272), (8, 2373238), (14, 1356136), (16, 1186619), (28, 678068), (56, 339034), (112, 169517), (283, 67088), (566, 33544), (599, 31696), (1132, 16772), (1198, 15848), (1981, 9584), (2264, 8386), (2396, 7924), (3962, 4792), (4193, 4528)]