21640983

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4663}}^1$

素因数の和:4703

約数の個数: 32

約数和(自身を含む): 37610496

約数和(自身を除く): 15969513

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4641, 4663, 13989, 32641, 60619, 79271, 97923, 181857, 237813, 424333, 554897, 1030523, 1272999, 1664691, 3091569, 7213661, 21640983]

約数ペア:

[(1, 21640983), (3, 7213661), (7, 3091569), (13, 1664691), (17, 1272999), (21, 1030523), (39, 554897), (51, 424333), (91, 237813), (119, 181857), (221, 97923), (273, 79271), (357, 60619), (663, 32641), (1547, 13989), (4641, 4663)]