19899955

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1\times {\mathrm{227}}^1$

素因数の和:518

約数の個数: 16

約数和(自身を含む): 24377760

約数和(自身を除く): 4477805

約数列:

[1, 5, 89, 197, 227, 445, 985, 1135, 17533, 20203, 44719, 87665, 101015, 223595, 3979991, 19899955]

約数ペア:

[(1, 19899955), (5, 3979991), (89, 223595), (197, 101015), (227, 87665), (445, 44719), (985, 20203), (1135, 17533)]