28191969

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{653}}^1$

素因数の和:719

約数の個数: 40

約数和(自身を含む): 46530792

約数和(自身を除く): 18338823

約数列:

[1, 3, 9, 13, 27, 39, 41, 81, 117, 123, 351, 369, 533, 653, 1053, 1107, 1599, 1959, 3321, 4797, 5877, 8489, 14391, 17631, 25467, 26773, 43173, 52893, 76401, 80319, 229203, 240957, 348049, 687609, 722871, 1044147, 2168613, 3132441, 9397323, 28191969]

約数ペア:

[(1, 28191969), (3, 9397323), (9, 3132441), (13, 2168613), (27, 1044147), (39, 722871), (41, 687609), (81, 348049), (117, 240957), (123, 229203), (351, 80319), (369, 76401), (533, 52893), (653, 43173), (1053, 26773), (1107, 25467), (1599, 17631), (1959, 14391), (3321, 8489), (4797, 5877)]