638539746

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{8186407}}^1$

素因数の和:8186425

約数の個数: 16

約数和(自身を含む): 1375316544

約数和(自身を除く): 736776798

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 8186407, 16372814, 24559221, 49118442, 106423291, 212846582, 319269873, 638539746]

約数ペア:

[(1, 638539746), (2, 319269873), (3, 212846582), (6, 106423291), (13, 49118442), (26, 24559221), (39, 16372814), (78, 8186407)]