19860015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2591}}^1$

素因数の和:2679

約数の個数: 32

約数和(自身を含む): 36827136

約数和(自身を除く): 16967121

約数列:

[1, 3, 5, 7, 15, 21, 35, 73, 105, 219, 365, 511, 1095, 1533, 2555, 2591, 7665, 7773, 12955, 18137, 38865, 54411, 90685, 189143, 272055, 567429, 945715, 1324001, 2837145, 3972003, 6620005, 19860015]

約数ペア:

[(1, 19860015), (3, 6620005), (5, 3972003), (7, 2837145), (15, 1324001), (21, 945715), (35, 567429), (73, 272055), (105, 189143), (219, 90685), (365, 54411), (511, 38865), (1095, 18137), (1533, 12955), (2555, 7773), (2591, 7665)]