201991881

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{5323}}^1$

素因数の和:5485

約数の個数: 32

約数和(自身を含む): 333921280

約数和(自身を除く): 131929399

約数列:

[1, 3, 7, 13, 21, 39, 91, 139, 273, 417, 973, 1807, 2919, 5323, 5421, 12649, 15969, 37261, 37947, 69199, 111783, 207597, 484393, 739897, 1453179, 2219691, 5179279, 9618661, 15537837, 28855983, 67330627, 201991881]

約数ペア:

[(1, 201991881), (3, 67330627), (7, 28855983), (13, 15537837), (21, 9618661), (39, 5179279), (91, 2219691), (139, 1453179), (273, 739897), (417, 484393), (973, 207597), (1807, 111783), (2919, 69199), (5323, 37947), (5421, 37261), (12649, 15969)]