20940452

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30977}}^1$

素因数の和:31007

約数の個数: 18

約数和(自身を含む): 39682818

約数和(自身を除く): 18742366

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30977, 61954, 123908, 402701, 805402, 1610804, 5235113, 10470226, 20940452]

約数ペア:

[(1, 20940452), (2, 10470226), (4, 5235113), (13, 1610804), (26, 805402), (52, 402701), (169, 123908), (338, 61954), (676, 30977)]