51999440

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1277}}^1$

素因数の和:1799

約数の個数: 40

約数和(自身を含む): 121231080

約数和(自身を除く): 69231640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 1277, 2036, 2545, 2554, 4072, 5090, 5108, 6385, 8144, 10180, 10216, 12770, 20360, 20432, 25540, 40720, 51080, 102160, 649993, 1299986, 2599972, 3249965, 5199944, 6499930, 10399888, 12999860, 25999720, 51999440]

約数ペア:

[(1, 51999440), (2, 25999720), (4, 12999860), (5, 10399888), (8, 6499930), (10, 5199944), (16, 3249965), (20, 2599972), (40, 1299986), (80, 649993), (509, 102160), (1018, 51080), (1277, 40720), (2036, 25540), (2545, 20432), (2554, 20360), (4072, 12770), (5090, 10216), (5108, 10180), (6385, 8144)]