20561328

素因数分解:

$2^4\times 3^2\times {\mathrm{142787}}^1$

素因数の和:142801

約数の個数: 30

約数和(自身を含む): 57543564

約数和(自身を除く): 36982236

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 142787, 285574, 428361, 571148, 856722, 1142296, 1285083, 1713444, 2284592, 2570166, 3426888, 5140332, 6853776, 10280664, 20561328]

約数ペア:

[(1, 20561328), (2, 10280664), (3, 6853776), (4, 5140332), (6, 3426888), (8, 2570166), (9, 2284592), (12, 1713444), (16, 1285083), (18, 1142296), (24, 856722), (36, 571148), (48, 428361), (72, 285574), (144, 142787)]