20897838

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{9923}}^1$

素因数の和:9950

約数の個数: 40

約数和(自身を含む): 50433768

約数和(自身を除く): 29535930

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 117, 162, 234, 351, 702, 1053, 2106, 9923, 19846, 29769, 59538, 89307, 128999, 178614, 257998, 267921, 386997, 535842, 773994, 803763, 1160991, 1607526, 2321982, 3482973, 6965946, 10448919, 20897838]

約数ペア:

[(1, 20897838), (2, 10448919), (3, 6965946), (6, 3482973), (9, 2321982), (13, 1607526), (18, 1160991), (26, 803763), (27, 773994), (39, 535842), (54, 386997), (78, 267921), (81, 257998), (117, 178614), (162, 128999), (234, 89307), (351, 59538), (702, 29769), (1053, 19846), (2106, 9923)]