8721920

素因数分解:

$2^9\times 5^1\times {\mathrm{3407}}^1$

素因数の和:3430

約数の個数: 40

約数和(自身を含む): 20918304

約数和(自身を除く): 12196384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 3407, 6814, 13628, 17035, 27256, 34070, 54512, 68140, 109024, 136280, 218048, 272560, 436096, 545120, 872192, 1090240, 1744384, 2180480, 4360960, 8721920]

約数ペア:

[(1, 8721920), (2, 4360960), (4, 2180480), (5, 1744384), (8, 1090240), (10, 872192), (16, 545120), (20, 436096), (32, 272560), (40, 218048), (64, 136280), (80, 109024), (128, 68140), (160, 54512), (256, 34070), (320, 27256), (512, 17035), (640, 13628), (1280, 6814), (2560, 3407)]