20973440

素因数分解:

$2^7\times 5^1\times {\mathrm{32771}}^1$

素因数の和:32790

約数の個数: 32

約数和(自身を含む): 50141160

約数和(自身を除く): 29167720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32771, 65542, 131084, 163855, 262168, 327710, 524336, 655420, 1048672, 1310840, 2097344, 2621680, 4194688, 5243360, 10486720, 20973440]

約数ペア:

[(1, 20973440), (2, 10486720), (4, 5243360), (5, 4194688), (8, 2621680), (10, 2097344), (16, 1310840), (20, 1048672), (32, 655420), (40, 524336), (64, 327710), (80, 262168), (128, 163855), (160, 131084), (320, 65542), (640, 32771)]