21910316

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{431}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 39191040

約数和(自身を除く): 17280724

約数列:

[1, 2, 4, 71, 142, 179, 284, 358, 431, 716, 862, 1724, 12709, 25418, 30601, 50836, 61202, 77149, 122404, 154298, 308596, 5477579, 10955158, 21910316]

約数ペア:

[(1, 21910316), (2, 10955158), (4, 5477579), (71, 308596), (142, 154298), (179, 122404), (284, 77149), (358, 61202), (431, 50836), (716, 30601), (862, 25418), (1724, 12709)]