7147777

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{229}}^1$

素因数の和:270

約数の個数: 20

約数和(自身を含む): 9019220

約数和(自身を除く): 1871443

約数列:

[1, 7, 13, 49, 91, 229, 343, 637, 1603, 2401, 2977, 4459, 11221, 20839, 31213, 78547, 145873, 549829, 1021111, 7147777]

約数ペア:

[(1, 7147777), (7, 1021111), (13, 549829), (49, 145873), (91, 78547), (229, 31213), (343, 20839), (637, 11221), (1603, 4459), (2401, 2977)]