21781908

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{14071}}^1$

素因数の和:14124

約数の個数: 36

約数和(自身を含む): 56344288

約数和(自身を除く): 34562380

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 14071, 28142, 42213, 56284, 84426, 126639, 168852, 253278, 506556, 605053, 1210106, 1815159, 2420212, 3630318, 5445477, 7260636, 10890954, 21781908]

約数ペア:

[(1, 21781908), (2, 10890954), (3, 7260636), (4, 5445477), (6, 3630318), (9, 2420212), (12, 1815159), (18, 1210106), (36, 605053), (43, 506556), (86, 253278), (129, 168852), (172, 126639), (258, 84426), (387, 56284), (516, 42213), (774, 28142), (1548, 14071)]