19811312

素因数分解:

$2^4\times {\mathrm{269}}^1\times {\mathrm{4603}}^1$

素因数の和:4880

約数の個数: 20

約数和(自身を含む): 38535480

約数和(自身を除く): 18724168

約数列:

[1, 2, 4, 8, 16, 269, 538, 1076, 2152, 4304, 4603, 9206, 18412, 36824, 73648, 1238207, 2476414, 4952828, 9905656, 19811312]

約数ペア:

[(1, 19811312), (2, 9905656), (4, 4952828), (8, 2476414), (16, 1238207), (269, 73648), (538, 36824), (1076, 18412), (2152, 9206), (4304, 4603)]