21178274

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{997}}^1$

素因数の和:1074

約数の個数: 32

約数和(自身を含む): 36886080

約数和(自身を除く): 15707806

約数列:

[1, 2, 13, 19, 26, 38, 43, 86, 247, 494, 559, 817, 997, 1118, 1634, 1994, 10621, 12961, 18943, 21242, 25922, 37886, 42871, 85742, 246259, 492518, 557323, 814549, 1114646, 1629098, 10589137, 21178274]

約数ペア:

[(1, 21178274), (2, 10589137), (13, 1629098), (19, 1114646), (26, 814549), (38, 557323), (43, 492518), (86, 246259), (247, 85742), (494, 42871), (559, 37886), (817, 25922), (997, 21242), (1118, 18943), (1634, 12961), (1994, 10621)]