18997017

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{827}}^1$

素因数の和:893

約数の個数: 32

約数和(自身を含む): 29675520

約数和(自身を除く): 10678503

約数列:

[1, 3, 13, 19, 31, 39, 57, 93, 247, 403, 589, 741, 827, 1209, 1767, 2481, 7657, 10751, 15713, 22971, 25637, 32253, 47139, 76911, 204269, 333281, 487103, 612807, 999843, 1461309, 6332339, 18997017]

約数ペア:

[(1, 18997017), (3, 6332339), (13, 1461309), (19, 999843), (31, 612807), (39, 487103), (57, 333281), (93, 204269), (247, 76911), (403, 47139), (589, 32253), (741, 25637), (827, 22971), (1209, 15713), (1767, 10751), (2481, 7657)]