1291249712

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{207463}}^1$

素因数の和:207860

約数の個数: 20

約数和(自身を含む): 2508239760

約数和(自身を除く): 1216990048

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 6224, 207463, 414926, 829852, 1659704, 3319408, 80703107, 161406214, 322812428, 645624856, 1291249712]

約数ペア:

[(1, 1291249712), (2, 645624856), (4, 322812428), (8, 161406214), (16, 80703107), (389, 3319408), (778, 1659704), (1556, 829852), (3112, 414926), (6224, 207463)]