21037578

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{1117}}^1$

素因数の和:1238

約数の個数: 32

約数和(自身を含む): 43682496

約数和(自身を除く): 22644918

約数列:

[1, 2, 3, 6, 43, 73, 86, 129, 146, 219, 258, 438, 1117, 2234, 3139, 3351, 6278, 6702, 9417, 18834, 48031, 81541, 96062, 144093, 163082, 244623, 288186, 489246, 3506263, 7012526, 10518789, 21037578]

約数ペア:

[(1, 21037578), (2, 10518789), (3, 7012526), (6, 3506263), (43, 489246), (73, 288186), (86, 244623), (129, 163082), (146, 144093), (219, 96062), (258, 81541), (438, 48031), (1117, 18834), (2234, 9417), (3139, 6702), (3351, 6278)]