21506786

素因数分解:

$2^1\times 7^3\times {\mathrm{107}}^1\times {\mathrm{293}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 38102400

約数和(自身を除く): 16595614

約数列:

[1, 2, 7, 14, 49, 98, 107, 214, 293, 343, 586, 686, 749, 1498, 2051, 4102, 5243, 10486, 14357, 28714, 31351, 36701, 62702, 73402, 100499, 200998, 219457, 438914, 1536199, 3072398, 10753393, 21506786]

約数ペア:

[(1, 21506786), (2, 10753393), (7, 3072398), (14, 1536199), (49, 438914), (98, 219457), (107, 200998), (214, 100499), (293, 73402), (343, 62702), (586, 36701), (686, 31351), (749, 28714), (1498, 14357), (2051, 10486), (4102, 5243)]