81271778

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{305533}}^1$

素因数の和:305561

約数の個数: 16

約数和(自身を含む): 146656320

約数和(自身を除く): 65384542

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 305533, 611066, 2138731, 4277462, 5805127, 11610254, 40635889, 81271778]

約数ペア:

[(1, 81271778), (2, 40635889), (7, 11610254), (14, 5805127), (19, 4277462), (38, 2138731), (133, 611066), (266, 305533)]