18981872

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13037}}^1$

素因数の和:13065

約数の個数: 40

約数和(自身を含む): 45267936

約数和(自身を除く): 26286064

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 13037, 26074, 52148, 91259, 104296, 169481, 182518, 208592, 338962, 365036, 677924, 730072, 1186367, 1355848, 1460144, 2372734, 2711696, 4745468, 9490936, 18981872]

約数ペア:

[(1, 18981872), (2, 9490936), (4, 4745468), (7, 2711696), (8, 2372734), (13, 1460144), (14, 1355848), (16, 1186367), (26, 730072), (28, 677924), (52, 365036), (56, 338962), (91, 208592), (104, 182518), (112, 169481), (182, 104296), (208, 91259), (364, 52148), (728, 26074), (1456, 13037)]