20972480

素因数分解:

$2^6\times 5^1\times {\mathrm{65539}}^1$

素因数の和:65556

約数の個数: 28

約数和(自身を含む): 49941480

約数和(自身を除く): 28969000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65539, 131078, 262156, 327695, 524312, 655390, 1048624, 1310780, 2097248, 2621560, 4194496, 5243120, 10486240, 20972480]

約数ペア:

[(1, 20972480), (2, 10486240), (4, 5243120), (5, 4194496), (8, 2621560), (10, 2097248), (16, 1310780), (20, 1048624), (32, 655390), (40, 524312), (64, 327695), (80, 262156), (160, 131078), (320, 65539)]