20003840

素因数分解:

$2^{10}\times 5^1\times {\mathrm{3907}}^1$

素因数の和:3932

約数の個数: 44

約数和(自身を含む): 47998056

約数和(自身を除く): 27994216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 3907, 5120, 7814, 15628, 19535, 31256, 39070, 62512, 78140, 125024, 156280, 250048, 312560, 500096, 625120, 1000192, 1250240, 2000384, 2500480, 4000768, 5000960, 10001920, 20003840]

約数ペア:

[(1, 20003840), (2, 10001920), (4, 5000960), (5, 4000768), (8, 2500480), (10, 2000384), (16, 1250240), (20, 1000192), (32, 625120), (40, 500096), (64, 312560), (80, 250048), (128, 156280), (160, 125024), (256, 78140), (320, 62512), (512, 39070), (640, 31256), (1024, 19535), (1280, 15628), (2560, 7814), (3907, 5120)]