21250187

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{283}}^1\times {\mathrm{631}}^1$

素因数の和:938

約数の個数: 16

約数和(自身を含む): 25846272

約数和(自身を除く): 4596085

約数列:

[1, 7, 17, 119, 283, 631, 1981, 4417, 4811, 10727, 33677, 75089, 178573, 1250011, 3035741, 21250187]

約数ペア:

[(1, 21250187), (7, 3035741), (17, 1250011), (119, 178573), (283, 75089), (631, 33677), (1981, 10727), (4417, 4811)]