21936681

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 37149840

約数和(自身を除く): 15213159

約数列:

[1, 3, 9, 13, 17, 39, 41, 51, 117, 123, 153, 221, 269, 369, 533, 663, 697, 807, 1599, 1989, 2091, 2421, 3497, 4573, 4797, 6273, 9061, 10491, 11029, 13719, 27183, 31473, 33087, 41157, 59449, 81549, 99261, 143377, 178347, 187493, 430131, 535041, 562479, 1290393, 1687437, 2437409, 7312227, 21936681]

約数ペア:

[(1, 21936681), (3, 7312227), (9, 2437409), (13, 1687437), (17, 1290393), (39, 562479), (41, 535041), (51, 430131), (117, 187493), (123, 178347), (153, 143377), (221, 99261), (269, 81549), (369, 59449), (533, 41157), (663, 33087), (697, 31473), (807, 27183), (1599, 13719), (1989, 11029), (2091, 10491), (2421, 9061), (3497, 6273), (4573, 4797)]