311919980

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{145757}}^1$

素因数の和:145873

約数の個数: 24

約数和(自身を含む): 661158288

約数和(自身を除く): 349238308

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 145757, 291514, 583028, 728785, 1457570, 2915140, 15595999, 31191998, 62383996, 77979995, 155959990, 311919980]

約数ペア:

[(1, 311919980), (2, 155959990), (4, 77979995), (5, 62383996), (10, 31191998), (20, 15595999), (107, 2915140), (214, 1457570), (428, 728785), (535, 583028), (1070, 291514), (2140, 145757)]