20454260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2833}}^1$

素因数の和:2880

約数の個数: 36

約数和(自身を含む): 45349668

約数和(自身を除く): 24895408

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2833, 3610, 5666, 7220, 11332, 14165, 28330, 53827, 56660, 107654, 215308, 269135, 538270, 1022713, 1076540, 2045426, 4090852, 5113565, 10227130, 20454260]

約数ペア:

[(1, 20454260), (2, 10227130), (4, 5113565), (5, 4090852), (10, 2045426), (19, 1076540), (20, 1022713), (38, 538270), (76, 269135), (95, 215308), (190, 107654), (361, 56660), (380, 53827), (722, 28330), (1444, 14165), (1805, 11332), (2833, 7220), (3610, 5666)]