20397488

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{293}}^1$

素因数の和:549

約数の個数: 40

約数和(自身を含む): 41924400

約数和(自身を除く): 21526912

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 229, 293, 304, 458, 586, 916, 1172, 1832, 2344, 3664, 4351, 4688, 5567, 8702, 11134, 17404, 22268, 34808, 44536, 67097, 69616, 89072, 134194, 268388, 536776, 1073552, 1274843, 2549686, 5099372, 10198744, 20397488]

約数ペア:

[(1, 20397488), (2, 10198744), (4, 5099372), (8, 2549686), (16, 1274843), (19, 1073552), (38, 536776), (76, 268388), (152, 134194), (229, 89072), (293, 69616), (304, 67097), (458, 44536), (586, 34808), (916, 22268), (1172, 17404), (1832, 11134), (2344, 8702), (3664, 5567), (4351, 4688)]