399945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 790272

約数和(自身を除く): 390327

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 293, 455, 879, 1365, 1465, 2051, 3809, 4395, 6153, 10255, 11427, 19045, 26663, 30765, 57135, 79989, 133315, 399945]

約数ペア:

[(1, 399945), (3, 133315), (5, 79989), (7, 57135), (13, 30765), (15, 26663), (21, 19045), (35, 11427), (39, 10255), (65, 6153), (91, 4395), (105, 3809), (195, 2051), (273, 1465), (293, 1365), (455, 879)]