21999950

素因数分解:

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

素因数の和:521

約数の個数: 48

約数和(自身を含む): 47139840

約数和(自身を除く): 25139890

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, 239, 263, 350, 478, 526, 1195, 1315, 1673, 1841, 2390, 2630, 3346, 3682, 5975, 6575, 8365, 9205, 11950, 13150, 16730, 18410, 41825, 46025, 62857, 83650, 92050, 125714, 314285, 439999, 628570, 879998, 1571425, 2199995, 3142850, 4399990, 10999975, 21999950]

約数ペア:

[(1, 21999950), (2, 10999975), (5, 4399990), (7, 3142850), (10, 2199995), (14, 1571425), (25, 879998), (35, 628570), (50, 439999), (70, 314285), (175, 125714), (239, 92050), (263, 83650), (350, 62857), (478, 46025), (526, 41825), (1195, 18410), (1315, 16730), (1673, 13150), (1841, 11950), (2390, 9205), (2630, 8365), (3346, 6575), (3682, 5975)]