18684880

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{751}}^1$

素因数の和:1075

約数の個数: 40

約数和(自身を含む): 43640064

約数和(自身を除く): 24955184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 751, 1244, 1502, 1555, 2488, 3004, 3110, 3755, 4976, 6008, 6220, 7510, 12016, 12440, 15020, 24880, 30040, 60080, 233561, 467122, 934244, 1167805, 1868488, 2335610, 3736976, 4671220, 9342440, 18684880]

約数ペア:

[(1, 18684880), (2, 9342440), (4, 4671220), (5, 3736976), (8, 2335610), (10, 1868488), (16, 1167805), (20, 934244), (40, 467122), (80, 233561), (311, 60080), (622, 30040), (751, 24880), (1244, 15020), (1502, 12440), (1555, 12016), (2488, 7510), (3004, 6220), (3110, 6008), (3755, 4976)]