16742920

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{653}}^1$

素因数の和:1305

約数の個数: 32

約数和(自身を含む): 37788120

約数和(自身を除く): 21045200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 653, 1282, 1306, 2564, 2612, 3205, 3265, 5128, 5224, 6410, 6530, 12820, 13060, 25640, 26120, 418573, 837146, 1674292, 2092865, 3348584, 4185730, 8371460, 16742920]

約数ペア:

[(1, 16742920), (2, 8371460), (4, 4185730), (5, 3348584), (8, 2092865), (10, 1674292), (20, 837146), (40, 418573), (641, 26120), (653, 25640), (1282, 13060), (1306, 12820), (2564, 6530), (2612, 6410), (3205, 5224), (3265, 5128)]