40721920

素因数分解:

$2^9\times 5^1\times {\mathrm{15907}}^1$

素因数の和:15930

約数の個数: 40

約数和(自身を含む): 97643304

約数和(自身を除く): 56921384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 15907, 31814, 63628, 79535, 127256, 159070, 254512, 318140, 509024, 636280, 1018048, 1272560, 2036096, 2545120, 4072192, 5090240, 8144384, 10180480, 20360960, 40721920]

約数ペア:

[(1, 40721920), (2, 20360960), (4, 10180480), (5, 8144384), (8, 5090240), (10, 4072192), (16, 2545120), (20, 2036096), (32, 1272560), (40, 1018048), (64, 636280), (80, 509024), (128, 318140), (160, 254512), (256, 159070), (320, 127256), (512, 79535), (640, 63628), (1280, 31814), (2560, 15907)]