2561209

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:244

約数の個数: 16

約数和(自身を含む): 3063808

約数和(自身を除く): 502599

約数列:

[1, 7, 43, 67, 127, 301, 469, 889, 2881, 5461, 8509, 20167, 38227, 59563, 365887, 2561209]

約数ペア:

[(1, 2561209), (7, 365887), (43, 59563), (67, 38227), (127, 20167), (301, 8509), (469, 5461), (889, 2881)]