16180880

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{907}}^1$

素因数の和:1143

約数の個数: 40

約数和(自身を含む): 37830912

約数和(自身を除く): 21650032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 907, 1115, 1784, 1814, 2230, 3568, 3628, 4460, 4535, 7256, 8920, 9070, 14512, 17840, 18140, 36280, 72560, 202261, 404522, 809044, 1011305, 1618088, 2022610, 3236176, 4045220, 8090440, 16180880]

約数ペア:

[(1, 16180880), (2, 8090440), (4, 4045220), (5, 3236176), (8, 2022610), (10, 1618088), (16, 1011305), (20, 809044), (40, 404522), (80, 202261), (223, 72560), (446, 36280), (892, 18140), (907, 17840), (1115, 14512), (1784, 9070), (1814, 8920), (2230, 7256), (3568, 4535), (3628, 4460)]