28181517

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{14747}}^1$

素因数の和:14777

約数の個数: 24

約数和(自身を含む): 47075616

約数和(自身を除く): 18894099

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 14747, 44241, 103229, 191711, 309687, 575133, 722603, 1341977, 2167809, 4025931, 9393839, 28181517]

約数ペア:

[(1, 28181517), (3, 9393839), (7, 4025931), (13, 2167809), (21, 1341977), (39, 722603), (49, 575133), (91, 309687), (147, 191711), (273, 103229), (637, 44241), (1911, 14747)]