638407834

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{66821}}^1$

素因数の和:67121

約数の個数: 16

約数和(自身を含む): 1017565416

約数和(自身を除く): 379157582

約数列:

[1, 2, 17, 34, 281, 562, 4777, 9554, 66821, 133642, 1135957, 2271914, 18776701, 37553402, 319203917, 638407834]

約数ペア:

[(1, 638407834), (2, 319203917), (17, 37553402), (34, 18776701), (281, 2271914), (562, 1135957), (4777, 133642), (9554, 66821)]