400455680

素因数分解:

$2^{11}\times 5^1\times {\mathrm{39107}}^1$

素因数の和:39134

約数の個数: 48

約数和(自身を含む): 960883560

約数和(自身を除く): 560427880

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, 5120, 10240, 39107, 78214, 156428, 195535, 312856, 391070, 625712, 782140, 1251424, 1564280, 2502848, 3128560, 5005696, 6257120, 10011392, 12514240, 20022784, 25028480, 40045568, 50056960, 80091136, 100113920, 200227840, 400455680]

約数ペア:

[(1, 400455680), (2, 200227840), (4, 100113920), (5, 80091136), (8, 50056960), (10, 40045568), (16, 25028480), (20, 20022784), (32, 12514240), (40, 10011392), (64, 6257120), (80, 5005696), (128, 3128560), (160, 2502848), (256, 1564280), (320, 1251424), (512, 782140), (640, 625712), (1024, 391070), (1280, 312856), (2048, 195535), (2560, 156428), (5120, 78214), (10240, 39107)]