2156245

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{677}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 3246264

約数和(自身を除く): 1090019

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 677, 3185, 3385, 4739, 8801, 23695, 33173, 44005, 61607, 165865, 308035, 431249, 2156245]

約数ペア:

[(1, 2156245), (5, 431249), (7, 308035), (13, 165865), (35, 61607), (49, 44005), (65, 33173), (91, 23695), (245, 8801), (455, 4739), (637, 3385), (677, 3185)]