128617257

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{263}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 187342848

約数和(自身を除く): 58725591

約数列:

[1, 3, 17, 43, 51, 129, 223, 263, 669, 731, 789, 2193, 3791, 4471, 9589, 11309, 11373, 13413, 28767, 33927, 58649, 163013, 175947, 192253, 489039, 576759, 997033, 2521907, 2991099, 7565721, 42872419, 128617257]

約数ペア:

[(1, 128617257), (3, 42872419), (17, 7565721), (43, 2991099), (51, 2521907), (129, 997033), (223, 576759), (263, 489039), (669, 192253), (731, 175947), (789, 163013), (2193, 58649), (3791, 33927), (4471, 28767), (9589, 13413), (11309, 11373)]