20917216

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:307

約数の個数: 48

約数和(自身を含む): 42865200

約数和(自身を除く): 21947984

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 107, 149, 164, 214, 298, 328, 428, 596, 656, 856, 1192, 1312, 1712, 2384, 3424, 4387, 4768, 6109, 8774, 12218, 15943, 17548, 24436, 31886, 35096, 48872, 63772, 70192, 97744, 127544, 140384, 195488, 255088, 510176, 653663, 1307326, 2614652, 5229304, 10458608, 20917216]

約数ペア:

[(1, 20917216), (2, 10458608), (4, 5229304), (8, 2614652), (16, 1307326), (32, 653663), (41, 510176), (82, 255088), (107, 195488), (149, 140384), (164, 127544), (214, 97744), (298, 70192), (328, 63772), (428, 48872), (596, 35096), (656, 31886), (856, 24436), (1192, 17548), (1312, 15943), (1712, 12218), (2384, 8774), (3424, 6109), (4387, 4768)]