820120960

素因数分解:

$2^7\times 5^1\times {\mathrm{1281439}}^1$

素因数の和:1281458

約数の個数: 32

約数和(自身を含む): 1960603200

約数和(自身を除く): 1140482240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1281439, 2562878, 5125756, 6407195, 10251512, 12814390, 20503024, 25628780, 41006048, 51257560, 82012096, 102515120, 164024192, 205030240, 410060480, 820120960]

約数ペア:

[(1, 820120960), (2, 410060480), (4, 205030240), (5, 164024192), (8, 102515120), (10, 82012096), (16, 51257560), (20, 41006048), (32, 25628780), (40, 20503024), (64, 12814390), (80, 10251512), (128, 6407195), (160, 5125756), (320, 2562878), (640, 1281439)]