2018102780

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1\times {\mathrm{1973}}^1$

素因数の和:2438

約数の個数: 48

約数和(自身を含む): 4278052800

約数和(自身を除く): 2259950020

約数列:

[1, 2, 4, 5, 10, 20, 199, 257, 398, 514, 796, 995, 1028, 1285, 1973, 1990, 2570, 3946, 3980, 5140, 7892, 9865, 19730, 39460, 51143, 102286, 204572, 255715, 392627, 507061, 511430, 785254, 1014122, 1022860, 1570508, 1963135, 2028244, 2535305, 3926270, 5070610, 7852540, 10141220, 100905139, 201810278, 403620556, 504525695, 1009051390, 2018102780]

約数ペア:

[(1, 2018102780), (2, 1009051390), (4, 504525695), (5, 403620556), (10, 201810278), (20, 100905139), (199, 10141220), (257, 7852540), (398, 5070610), (514, 3926270), (796, 2535305), (995, 2028244), (1028, 1963135), (1285, 1570508), (1973, 1022860), (1990, 1014122), (2570, 785254), (3946, 511430), (3980, 507061), (5140, 392627), (7892, 255715), (9865, 204572), (19730, 102286), (39460, 51143)]