4399990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{263}}^1$

素因数の和:516

約数の個数: 32

約数和(自身を含む): 9123840

約数和(自身を除く): 4723850

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 239, 263, 478, 526, 1195, 1315, 1673, 1841, 2390, 2630, 3346, 3682, 8365, 9205, 16730, 18410, 62857, 125714, 314285, 439999, 628570, 879998, 2199995, 4399990]

約数ペア:

[(1, 4399990), (2, 2199995), (5, 879998), (7, 628570), (10, 439999), (14, 314285), (35, 125714), (70, 62857), (239, 18410), (263, 16730), (478, 9205), (526, 8365), (1195, 3682), (1315, 3346), (1673, 2630), (1841, 2390)]