16981887

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^2\times {\mathrm{97}}^1$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 25008816

約数和(自身を除く): 8026929

約数列:

[1, 3, 13, 39, 67, 97, 201, 291, 871, 1261, 2613, 3783, 4489, 6499, 13467, 19497, 58357, 84487, 175071, 253461, 435433, 1306299, 5660629, 16981887]

約数ペア:

[(1, 16981887), (3, 5660629), (13, 1306299), (39, 435433), (67, 253461), (97, 175071), (201, 84487), (291, 58357), (871, 19497), (1261, 13467), (2613, 6499), (3783, 4489)]