20480187

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{1531}}^1$

素因数の和:1568

約数の個数: 32

約数和(自身を含む): 34316800

約数和(自身を除く): 13836613

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 343, 637, 1029, 1531, 1911, 4459, 4593, 10717, 13377, 19903, 32151, 59709, 75019, 139321, 225057, 417963, 525133, 975247, 1575399, 2925741, 6826729, 20480187]

約数ペア:

[(1, 20480187), (3, 6826729), (7, 2925741), (13, 1575399), (21, 975247), (39, 525133), (49, 417963), (91, 225057), (147, 139321), (273, 75019), (343, 59709), (637, 32151), (1029, 19903), (1531, 13377), (1911, 10717), (4459, 4593)]