21785776

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{15299}}^1$

素因数の和:15396

約数の個数: 20

約数和(自身を含む): 42687000

約数和(自身を除く): 20901224

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 15299, 30598, 61196, 122392, 244784, 1361611, 2723222, 5446444, 10892888, 21785776]

約数ペア:

[(1, 21785776), (2, 10892888), (4, 5446444), (8, 2723222), (16, 1361611), (89, 244784), (178, 122392), (356, 61196), (712, 30598), (1424, 15299)]