20561168

素因数分解:

$2^4\times {\mathrm{419}}^1\times {\mathrm{3067}}^1$

素因数の和:3494

約数の個数: 20

約数和(自身を含む): 39945360

約数和(自身を除く): 19384192

約数列:

[1, 2, 4, 8, 16, 419, 838, 1676, 3067, 3352, 6134, 6704, 12268, 24536, 49072, 1285073, 2570146, 5140292, 10280584, 20561168]

約数ペア:

[(1, 20561168), (2, 10280584), (4, 5140292), (8, 2570146), (16, 1285073), (419, 49072), (838, 24536), (1676, 12268), (3067, 6704), (3352, 6134)]