20635184

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{337}}^1$

素因数の和:477

約数の個数: 40

約数和(自身を含む): 41492880

約数和(自身を除く): 20857696

約数列:

[1, 2, 4, 8, 16, 43, 86, 89, 172, 178, 337, 344, 356, 674, 688, 712, 1348, 1424, 2696, 3827, 5392, 7654, 14491, 15308, 28982, 29993, 30616, 57964, 59986, 61232, 115928, 119972, 231856, 239944, 479888, 1289699, 2579398, 5158796, 10317592, 20635184]

約数ペア:

[(1, 20635184), (2, 10317592), (4, 5158796), (8, 2579398), (16, 1289699), (43, 479888), (86, 239944), (89, 231856), (172, 119972), (178, 115928), (337, 61232), (344, 59986), (356, 57964), (674, 30616), (688, 29993), (712, 28982), (1348, 15308), (1424, 14491), (2696, 7654), (3827, 5392)]