54720440

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{5323}}^1$

素因数の和:5591

約数の個数: 32

約数和(自身を含む): 123623280

約数和(自身を除く): 68902840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 5323, 10280, 10646, 21292, 26615, 42584, 53230, 106460, 212920, 1368011, 2736022, 5472044, 6840055, 10944088, 13680110, 27360220, 54720440]

約数ペア:

[(1, 54720440), (2, 27360220), (4, 13680110), (5, 10944088), (8, 6840055), (10, 5472044), (20, 2736022), (40, 1368011), (257, 212920), (514, 106460), (1028, 53230), (1285, 42584), (2056, 26615), (2570, 21292), (5140, 10646), (5323, 10280)]