2143380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 6068160

約数和(自身を除く): 3924780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 257, 278, 417, 514, 556, 695, 771, 834, 1028, 1285, 1390, 1542, 1668, 2085, 2570, 2780, 3084, 3855, 4170, 5140, 7710, 8340, 15420, 35723, 71446, 107169, 142892, 178615, 214338, 357230, 428676, 535845, 714460, 1071690, 2143380]

約数ペア:

[(1, 2143380), (2, 1071690), (3, 714460), (4, 535845), (5, 428676), (6, 357230), (10, 214338), (12, 178615), (15, 142892), (20, 107169), (30, 71446), (60, 35723), (139, 15420), (257, 8340), (278, 7710), (417, 5140), (514, 4170), (556, 3855), (695, 3084), (771, 2780), (834, 2570), (1028, 2085), (1285, 1668), (1390, 1542)]