13286840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{6779}}^1$

素因数の和:6804

約数の個数: 48

約数和(自身を含む): 34781400

約数和(自身を除く): 21494560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 6779, 13558, 27116, 33895, 47453, 54232, 67790, 94906, 135580, 189812, 237265, 271160, 332171, 379624, 474530, 664342, 949060, 1328684, 1660855, 1898120, 2657368, 3321710, 6643420, 13286840]

約数ペア:

[(1, 13286840), (2, 6643420), (4, 3321710), (5, 2657368), (7, 1898120), (8, 1660855), (10, 1328684), (14, 949060), (20, 664342), (28, 474530), (35, 379624), (40, 332171), (49, 271160), (56, 237265), (70, 189812), (98, 135580), (140, 94906), (196, 67790), (245, 54232), (280, 47453), (392, 33895), (490, 27116), (980, 13558), (1960, 6779)]