16839981

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 40

約数和(自身を含む): 26658720

約数和(自身を除く): 9818739

約数列:

[1, 3, 9, 27, 29, 67, 81, 87, 107, 201, 261, 321, 603, 783, 963, 1809, 1943, 2349, 2889, 3103, 5427, 5829, 7169, 8667, 9309, 17487, 21507, 27927, 52461, 64521, 83781, 157383, 193563, 207901, 251343, 580689, 623703, 1871109, 5613327, 16839981]

約数ペア:

[(1, 16839981), (3, 5613327), (9, 1871109), (27, 623703), (29, 580689), (67, 251343), (81, 207901), (87, 193563), (107, 157383), (201, 83781), (261, 64521), (321, 52461), (603, 27927), (783, 21507), (963, 17487), (1809, 9309), (1943, 8667), (2349, 7169), (2889, 5829), (3103, 5427)]