399380480

素因数分解:

$2^{12}\times 5^1\times {\mathrm{19501}}^1$

素因数の和:19530

約数の個数: 52

約数和(自身を含む): 958445292

約数和(自身を除く): 559064812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 4096, 5120, 10240, 19501, 20480, 39002, 78004, 97505, 156008, 195010, 312016, 390020, 624032, 780040, 1248064, 1560080, 2496128, 3120160, 4992256, 6240320, 9984512, 12480640, 19969024, 24961280, 39938048, 49922560, 79876096, 99845120, 199690240, 399380480]

約数ペア:

[(1, 399380480), (2, 199690240), (4, 99845120), (5, 79876096), (8, 49922560), (10, 39938048), (16, 24961280), (20, 19969024), (32, 12480640), (40, 9984512), (64, 6240320), (80, 4992256), (128, 3120160), (160, 2496128), (256, 1560080), (320, 1248064), (512, 780040), (640, 624032), (1024, 390020), (1280, 312016), (2048, 195010), (2560, 156008), (4096, 97505), (5120, 78004), (10240, 39002), (19501, 20480)]