19959568

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{433}}^1$

素因数の和:551

約数の個数: 40

約数和(自身を含む): 40254368

約数和(自身を除く): 20294800

約数列:

[1, 2, 4, 8, 16, 43, 67, 86, 134, 172, 268, 344, 433, 536, 688, 866, 1072, 1732, 2881, 3464, 5762, 6928, 11524, 18619, 23048, 29011, 37238, 46096, 58022, 74476, 116044, 148952, 232088, 297904, 464176, 1247473, 2494946, 4989892, 9979784, 19959568]

約数ペア:

[(1, 19959568), (2, 9979784), (4, 4989892), (8, 2494946), (16, 1247473), (43, 464176), (67, 297904), (86, 232088), (134, 148952), (172, 116044), (268, 74476), (344, 58022), (433, 46096), (536, 37238), (688, 29011), (866, 23048), (1072, 18619), (1732, 11524), (2881, 6928), (3464, 5762)]