21175990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{619}}^1$

素因数の和:948

約数の個数: 32

約数和(自身を含む): 41783040

約数和(自身を除く): 20607050

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 311, 619, 622, 1238, 1555, 3095, 3110, 3421, 6190, 6809, 6842, 13618, 17105, 34045, 34210, 68090, 192509, 385018, 962545, 1925090, 2117599, 4235198, 10587995, 21175990]

約数ペア:

[(1, 21175990), (2, 10587995), (5, 4235198), (10, 2117599), (11, 1925090), (22, 962545), (55, 385018), (110, 192509), (311, 68090), (619, 34210), (622, 34045), (1238, 17105), (1555, 13618), (3095, 6842), (3110, 6809), (3421, 6190)]