490240

素因数分解:

$2^8\times 5^1\times {\mathrm{383}}^1$

素因数の和:404

約数の個数: 36

約数和(自身を含む): 1177344

約数和(自身を除く): 687104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 383, 640, 766, 1280, 1532, 1915, 3064, 3830, 6128, 7660, 12256, 15320, 24512, 30640, 49024, 61280, 98048, 122560, 245120, 490240]

約数ペア:

[(1, 490240), (2, 245120), (4, 122560), (5, 98048), (8, 61280), (10, 49024), (16, 30640), (20, 24512), (32, 15320), (40, 12256), (64, 7660), (80, 6128), (128, 3830), (160, 3064), (256, 1915), (320, 1532), (383, 1280), (640, 766)]