1441280

素因数分解:

$2^9\times 5^1\times {\mathrm{563}}^1$

素因数の和:586

約数の個数: 40

約数和(自身を含む): 3461832

約数和(自身を除く): 2020552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 563, 640, 1126, 1280, 2252, 2560, 2815, 4504, 5630, 9008, 11260, 18016, 22520, 36032, 45040, 72064, 90080, 144128, 180160, 288256, 360320, 720640, 1441280]

約数ペア:

[(1, 1441280), (2, 720640), (4, 360320), (5, 288256), (8, 180160), (10, 144128), (16, 90080), (20, 72064), (32, 45040), (40, 36032), (64, 22520), (80, 18016), (128, 11260), (160, 9008), (256, 5630), (320, 4504), (512, 2815), (563, 2560), (640, 2252), (1126, 1280)]