18500020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{293}}^1$

素因数の和:361

約数の個数: 96

約数和(自身を含む): 49787136

約数和(自身を除く): 31287116

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 41, 44, 55, 70, 77, 82, 110, 140, 154, 164, 205, 220, 287, 293, 308, 385, 410, 451, 574, 586, 770, 820, 902, 1148, 1172, 1435, 1465, 1540, 1804, 2051, 2255, 2870, 2930, 3157, 3223, 4102, 4510, 5740, 5860, 6314, 6446, 8204, 9020, 10255, 12013, 12628, 12892, 15785, 16115, 20510, 22561, 24026, 31570, 32230, 41020, 45122, 48052, 60065, 63140, 64460, 84091, 90244, 112805, 120130, 132143, 168182, 225610, 240260, 264286, 336364, 420455, 451220, 528572, 660715, 840910, 925001, 1321430, 1681820, 1850002, 2642860, 3700004, 4625005, 9250010, 18500020]

約数ペア:

[(1, 18500020), (2, 9250010), (4, 4625005), (5, 3700004), (7, 2642860), (10, 1850002), (11, 1681820), (14, 1321430), (20, 925001), (22, 840910), (28, 660715), (35, 528572), (41, 451220), (44, 420455), (55, 336364), (70, 264286), (77, 240260), (82, 225610), (110, 168182), (140, 132143), (154, 120130), (164, 112805), (205, 90244), (220, 84091), (287, 64460), (293, 63140), (308, 60065), (385, 48052), (410, 45122), (451, 41020), (574, 32230), (586, 31570), (770, 24026), (820, 22561), (902, 20510), (1148, 16115), (1172, 15785), (1435, 12892), (1465, 12628), (1540, 12013), (1804, 10255), (2051, 9020), (2255, 8204), (2870, 6446), (2930, 6314), (3157, 5860), (3223, 5740), (4102, 4510)]