138201520

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{8681}}^1$

素因数の和:8893

約数の個数: 40

約数和(自身を含む): 322970400

約数和(自身を除く): 184768880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 7960, 8681, 15920, 17362, 34724, 43405, 69448, 86810, 138896, 173620, 347240, 694480, 1727519, 3455038, 6910076, 8637595, 13820152, 17275190, 27640304, 34550380, 69100760, 138201520]

約数ペア:

[(1, 138201520), (2, 69100760), (4, 34550380), (5, 27640304), (8, 17275190), (10, 13820152), (16, 8637595), (20, 6910076), (40, 3455038), (80, 1727519), (199, 694480), (398, 347240), (796, 173620), (995, 138896), (1592, 86810), (1990, 69448), (3184, 43405), (3980, 34724), (7960, 17362), (8681, 15920)]