16998891

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{877}}^1$

素因数の和:971

約数の個数: 32

約数和(自身を含む): 28320768

約数和(自身を除く): 11321877

約数列:

[1, 3, 7, 13, 21, 39, 71, 91, 213, 273, 497, 877, 923, 1491, 2631, 2769, 6139, 6461, 11401, 18417, 19383, 34203, 62267, 79807, 186801, 239421, 435869, 809471, 1307607, 2428413, 5666297, 16998891]

約数ペア:

[(1, 16998891), (3, 5666297), (7, 2428413), (13, 1307607), (21, 809471), (39, 435869), (71, 239421), (91, 186801), (213, 79807), (273, 62267), (497, 34203), (877, 19383), (923, 18417), (1491, 11401), (2631, 6461), (2769, 6139)]