1918397719

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{389839}}^1$

素因数の和:389902

約数の個数: 16

約数和(自身を含む): 2370227200

約数和(自身を除く): 451829481

約数列:

[1, 7, 19, 37, 133, 259, 703, 4921, 389839, 2728873, 7406941, 14424043, 51848587, 100968301, 274056817, 1918397719]

約数ペア:

[(1, 1918397719), (7, 274056817), (19, 100968301), (37, 51848587), (133, 14424043), (259, 7406941), (703, 2728873), (4921, 389839)]