21187565

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 30935040

約数和(自身を除く): 9747475

約数列:

[1, 5, 7, 19, 35, 95, 133, 151, 211, 665, 755, 1055, 1057, 1477, 2869, 4009, 5285, 7385, 14345, 20045, 20083, 28063, 31861, 100415, 140315, 159305, 223027, 605359, 1115135, 3026795, 4237513, 21187565]

約数ペア:

[(1, 21187565), (5, 4237513), (7, 3026795), (19, 1115135), (35, 605359), (95, 223027), (133, 159305), (151, 140315), (211, 100415), (665, 31861), (755, 28063), (1055, 20083), (1057, 20045), (1477, 14345), (2869, 7385), (4009, 5285)]