20879468

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{47}}^2\times {\mathrm{139}}^1$

素因数の和:254

約数の個数: 36

約数和(自身を含む): 39813480

約数和(自身を除く): 18934012

約数列:

[1, 2, 4, 17, 34, 47, 68, 94, 139, 188, 278, 556, 799, 1598, 2209, 2363, 3196, 4418, 4726, 6533, 8836, 9452, 13066, 26132, 37553, 75106, 111061, 150212, 222122, 307051, 444244, 614102, 1228204, 5219867, 10439734, 20879468]

約数ペア:

[(1, 20879468), (2, 10439734), (4, 5219867), (17, 1228204), (34, 614102), (47, 444244), (68, 307051), (94, 222122), (139, 150212), (188, 111061), (278, 75106), (556, 37553), (799, 26132), (1598, 13066), (2209, 9452), (2363, 8836), (3196, 6533), (4418, 4726)]