20741511

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 32997376

約数和(自身を除く): 12255865

約数列:

[1, 3, 7, 21, 31, 93, 151, 211, 217, 453, 633, 651, 1057, 1477, 3171, 4431, 4681, 6541, 14043, 19623, 31861, 32767, 45787, 95583, 98301, 137361, 223027, 669081, 987691, 2963073, 6913837, 20741511]

約数ペア:

[(1, 20741511), (3, 6913837), (7, 2963073), (21, 987691), (31, 669081), (93, 223027), (151, 137361), (211, 98301), (217, 95583), (453, 45787), (633, 32767), (651, 31861), (1057, 19623), (1477, 14043), (3171, 6541), (4431, 4681)]