1680780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 4767840

約数和(自身を除く): 3087060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 109, 218, 257, 327, 436, 514, 545, 654, 771, 1028, 1090, 1285, 1308, 1542, 1635, 2180, 2570, 3084, 3270, 3855, 5140, 6540, 7710, 15420, 28013, 56026, 84039, 112052, 140065, 168078, 280130, 336156, 420195, 560260, 840390, 1680780]

約数ペア:

[(1, 1680780), (2, 840390), (3, 560260), (4, 420195), (5, 336156), (6, 280130), (10, 168078), (12, 140065), (15, 112052), (20, 84039), (30, 56026), (60, 28013), (109, 15420), (218, 7710), (257, 6540), (327, 5140), (436, 3855), (514, 3270), (545, 3084), (654, 2570), (771, 2180), (1028, 1635), (1090, 1542), (1285, 1308)]