128463321

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{91303}}^1$

素因数の和:91380

約数の個数: 16

約数和(自身を含む): 198677504

約数和(自身を除く): 70214183

約数列:

[1, 3, 7, 21, 67, 201, 469, 1407, 91303, 273909, 639121, 1917363, 6117301, 18351903, 42821107, 128463321]

約数ペア:

[(1, 128463321), (3, 42821107), (7, 18351903), (21, 6117301), (67, 1917363), (201, 639121), (469, 273909), (1407, 91303)]