21009136

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69109}}^1$

素因数の和:69136

約数の個数: 20

約数和(自身を含む): 42848200

約数和(自身を除く): 21839064

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69109, 138218, 276436, 552872, 1105744, 1313071, 2626142, 5252284, 10504568, 21009136]

約数ペア:

[(1, 21009136), (2, 10504568), (4, 5252284), (8, 2626142), (16, 1313071), (19, 1105744), (38, 552872), (76, 276436), (152, 138218), (304, 69109)]