20551401

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{673}}^1$

素因数の和:727

約数の個数: 40

約数和(自身を含む): 34252680

約数和(自身を除く): 13701279

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 673, 783, 1053, 1131, 2019, 2349, 3393, 6057, 8749, 10179, 18171, 19517, 26247, 30537, 54513, 58551, 78741, 175653, 236223, 253721, 526959, 708669, 761163, 1580877, 2283489, 6850467, 20551401]

約数ペア:

[(1, 20551401), (3, 6850467), (9, 2283489), (13, 1580877), (27, 761163), (29, 708669), (39, 526959), (81, 253721), (87, 236223), (117, 175653), (261, 78741), (351, 58551), (377, 54513), (673, 30537), (783, 26247), (1053, 19517), (1131, 18171), (2019, 10179), (2349, 8749), (3393, 6057)]