18315856

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{509}}^1$

素因数の和:703

約数の個数: 40

約数和(自身を含む): 38513160

約数和(自身を除く): 20197304

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 173, 208, 346, 509, 692, 1018, 1384, 2036, 2249, 2768, 4072, 4498, 6617, 8144, 8996, 13234, 17992, 26468, 35984, 52936, 88057, 105872, 176114, 352228, 704456, 1144741, 1408912, 2289482, 4578964, 9157928, 18315856]

約数ペア:

[(1, 18315856), (2, 9157928), (4, 4578964), (8, 2289482), (13, 1408912), (16, 1144741), (26, 704456), (52, 352228), (104, 176114), (173, 105872), (208, 88057), (346, 52936), (509, 35984), (692, 26468), (1018, 17992), (1384, 13234), (2036, 8996), (2249, 8144), (2768, 6617), (4072, 4498)]