439997876

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{380621}}^1$

素因数の和:380659

約数の個数: 18

約数和(自身を含む): 817956678

約数和(自身を除く): 377958802

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 380621, 761242, 1522484, 6470557, 12941114, 25882228, 109999469, 219998938, 439997876]

約数ペア:

[(1, 439997876), (2, 219998938), (4, 109999469), (17, 25882228), (34, 12941114), (68, 6470557), (289, 1522484), (578, 761242), (1156, 380621)]