20978659390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{457151}}^1$

素因数の和:457524

約数の個数: 32

約数和(自身を含む): 40781615616

約数和(自身を除く): 19802956226

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 353, 706, 1765, 3530, 4589, 9178, 22945, 45890, 457151, 914302, 2285755, 4571510, 5942963, 11885926, 29714815, 59429630, 161374303, 322748606, 806871515, 1613743030, 2097865939, 4195731878, 10489329695, 20978659390]

約数ペア:

[(1, 20978659390), (2, 10489329695), (5, 4195731878), (10, 2097865939), (13, 1613743030), (26, 806871515), (65, 322748606), (130, 161374303), (353, 59429630), (706, 29714815), (1765, 11885926), (3530, 5942963), (4589, 4571510), (9178, 2285755), (22945, 914302), (45890, 457151)]