21209055

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2767}}^1$

素因数の和:2855

約数の個数: 32

約数和(自身を含む): 39327744

約数和(自身を除く): 18118689

約数列:

[1, 3, 5, 7, 15, 21, 35, 73, 105, 219, 365, 511, 1095, 1533, 2555, 2767, 7665, 8301, 13835, 19369, 41505, 58107, 96845, 201991, 290535, 605973, 1009955, 1413937, 3029865, 4241811, 7069685, 21209055]

約数ペア:

[(1, 21209055), (3, 7069685), (5, 4241811), (7, 3029865), (15, 1413937), (21, 1009955), (35, 605973), (73, 290535), (105, 201991), (219, 96845), (365, 58107), (511, 41505), (1095, 19369), (1533, 13835), (2555, 8301), (2767, 7665)]