138780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{257}}^1$

素因数の和:275

約数の個数: 48

約数和(自身を含む): 433440

約数和(自身を除く): 294660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 257, 270, 514, 540, 771, 1028, 1285, 1542, 2313, 2570, 3084, 3855, 4626, 5140, 6939, 7710, 9252, 11565, 13878, 15420, 23130, 27756, 34695, 46260, 69390, 138780]

約数ペア:

[(1, 138780), (2, 69390), (3, 46260), (4, 34695), (5, 27756), (6, 23130), (9, 15420), (10, 13878), (12, 11565), (15, 9252), (18, 7710), (20, 6939), (27, 5140), (30, 4626), (36, 3855), (45, 3084), (54, 2570), (60, 2313), (90, 1542), (108, 1285), (135, 1028), (180, 771), (257, 540), (270, 514)]