400194560

素因数分解:

$2^{10}\times 5^1\times {\mathrm{78163}}^1$

素因数の和:78188

約数の個数: 44

約数和(自身を含む): 960010248

約数和(自身を除く): 559815688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 78163, 156326, 312652, 390815, 625304, 781630, 1250608, 1563260, 2501216, 3126520, 5002432, 6253040, 10004864, 12506080, 20009728, 25012160, 40019456, 50024320, 80038912, 100048640, 200097280, 400194560]

約数ペア:

[(1, 400194560), (2, 200097280), (4, 100048640), (5, 80038912), (8, 50024320), (10, 40019456), (16, 25012160), (20, 20009728), (32, 12506080), (40, 10004864), (64, 6253040), (80, 5002432), (128, 3126520), (160, 2501216), (256, 1563260), (320, 1250608), (512, 781630), (640, 625304), (1024, 390815), (1280, 312652), (2560, 156326), (5120, 78163)]