21388278

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{757}}^1$

素因数の和:1056

約数の個数: 32

約数和(自身を含む): 45516384

約数和(自身を除く): 24128106

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 277, 554, 757, 831, 1514, 1662, 2271, 4542, 4709, 9418, 12869, 14127, 25738, 28254, 38607, 77214, 209689, 419378, 629067, 1258134, 3564713, 7129426, 10694139, 21388278]

約数ペア:

[(1, 21388278), (2, 10694139), (3, 7129426), (6, 3564713), (17, 1258134), (34, 629067), (51, 419378), (102, 209689), (277, 77214), (554, 38607), (757, 28254), (831, 25738), (1514, 14127), (1662, 12869), (2271, 9418), (4542, 4709)]