19880091

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{28687}}^1$

素因数の和:28711

約数の個数: 24

約数和(自身を含む): 35802624

約数和(自身を除く): 15922533

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 28687, 86061, 200809, 258183, 315557, 602427, 946671, 1807281, 2208899, 2840013, 6626697, 19880091]

約数ペア:

[(1, 19880091), (3, 6626697), (7, 2840013), (9, 2208899), (11, 1807281), (21, 946671), (33, 602427), (63, 315557), (77, 258183), (99, 200809), (231, 86061), (693, 28687)]