389907664

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{607}}^1\times {\mathrm{2113}}^1$

素因数の和:2747

約数の個数: 40

約数和(自身を含む): 796893440

約数和(自身を除く): 406985776

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 607, 1214, 2113, 2428, 4226, 4856, 8452, 9712, 11533, 16904, 23066, 33808, 40147, 46132, 80294, 92264, 160588, 184528, 321176, 642352, 1282591, 2565182, 5130364, 10260728, 20521456, 24369229, 48738458, 97476916, 194953832, 389907664]

約数ペア:

[(1, 389907664), (2, 194953832), (4, 97476916), (8, 48738458), (16, 24369229), (19, 20521456), (38, 10260728), (76, 5130364), (152, 2565182), (304, 1282591), (607, 642352), (1214, 321176), (2113, 184528), (2428, 160588), (4226, 92264), (4856, 80294), (8452, 46132), (9712, 40147), (11533, 33808), (16904, 23066)]