19745775

素因数分解:

$3^4\times 5^2\times 7^2\times {\mathrm{199}}^1$

素因数の和:235

約数の個数: 90

約数和(自身を含む): 42761400

約数和(自身を除く): 23015625

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 49, 63, 75, 81, 105, 135, 147, 175, 189, 199, 225, 245, 315, 405, 441, 525, 567, 597, 675, 735, 945, 995, 1225, 1323, 1393, 1575, 1791, 2025, 2205, 2835, 2985, 3675, 3969, 4179, 4725, 4975, 5373, 6615, 6965, 8955, 9751, 11025, 12537, 14175, 14925, 16119, 19845, 20895, 26865, 29253, 33075, 34825, 37611, 44775, 48755, 62685, 80595, 87759, 99225, 104475, 112833, 134325, 146265, 188055, 243775, 263277, 313425, 402975, 438795, 564165, 731325, 789831, 940275, 1316385, 2193975, 2820825, 3949155, 6581925, 19745775]

約数ペア:

[(1, 19745775), (3, 6581925), (5, 3949155), (7, 2820825), (9, 2193975), (15, 1316385), (21, 940275), (25, 789831), (27, 731325), (35, 564165), (45, 438795), (49, 402975), (63, 313425), (75, 263277), (81, 243775), (105, 188055), (135, 146265), (147, 134325), (175, 112833), (189, 104475), (199, 99225), (225, 87759), (245, 80595), (315, 62685), (405, 48755), (441, 44775), (525, 37611), (567, 34825), (597, 33075), (675, 29253), (735, 26865), (945, 20895), (995, 19845), (1225, 16119), (1323, 14925), (1393, 14175), (1575, 12537), (1791, 11025), (2025, 9751), (2205, 8955), (2835, 6965), (2985, 6615), (3675, 5373), (3969, 4975), (4179, 4725)]