678754990

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1\times {\mathrm{2423}}^1$

素因数の和:2796

約数の個数: 32

約数和(自身を含む): 1238276160

約数和(自身を除く): 559521170

約数列:

[1, 2, 5, 10, 109, 218, 257, 514, 545, 1090, 1285, 2423, 2570, 4846, 12115, 24230, 28013, 56026, 140065, 264107, 280130, 528214, 622711, 1245422, 1320535, 2641070, 3113555, 6227110, 67875499, 135750998, 339377495, 678754990]

約数ペア:

[(1, 678754990), (2, 339377495), (5, 135750998), (10, 67875499), (109, 6227110), (218, 3113555), (257, 2641070), (514, 1320535), (545, 1245422), (1090, 622711), (1285, 528214), (2423, 280130), (2570, 264107), (4846, 140065), (12115, 56026), (24230, 28013)]