81571490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{281}}^1$

素因数の和:348

約数の個数: 128

約数和(自身を含む): 204664320

約数和(自身を除く): 123092830

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 26, 29, 35, 55, 58, 65, 70, 77, 91, 110, 130, 143, 145, 154, 182, 203, 281, 286, 290, 319, 377, 385, 406, 455, 562, 638, 715, 754, 770, 910, 1001, 1015, 1405, 1430, 1595, 1885, 1967, 2002, 2030, 2233, 2639, 2810, 3091, 3190, 3653, 3770, 3934, 4147, 4466, 5005, 5278, 6182, 7306, 8149, 8294, 9835, 10010, 11165, 13195, 15455, 16298, 18265, 19670, 20735, 21637, 22330, 25571, 26390, 29029, 30910, 36530, 40183, 40745, 41470, 43274, 51142, 57043, 58058, 80366, 81490, 89639, 105937, 108185, 114086, 127855, 145145, 179278, 200915, 211874, 216370, 255710, 281281, 285215, 290290, 401830, 448195, 529685, 562562, 570430, 627473, 741559, 896390, 1059370, 1165307, 1254946, 1406405, 1483118, 2330614, 2812810, 3137365, 3707795, 5826535, 6274730, 7415590, 8157149, 11653070, 16314298, 40785745, 81571490]

約数ペア:

[(1, 81571490), (2, 40785745), (5, 16314298), (7, 11653070), (10, 8157149), (11, 7415590), (13, 6274730), (14, 5826535), (22, 3707795), (26, 3137365), (29, 2812810), (35, 2330614), (55, 1483118), (58, 1406405), (65, 1254946), (70, 1165307), (77, 1059370), (91, 896390), (110, 741559), (130, 627473), (143, 570430), (145, 562562), (154, 529685), (182, 448195), (203, 401830), (281, 290290), (286, 285215), (290, 281281), (319, 255710), (377, 216370), (385, 211874), (406, 200915), (455, 179278), (562, 145145), (638, 127855), (715, 114086), (754, 108185), (770, 105937), (910, 89639), (1001, 81490), (1015, 80366), (1405, 58058), (1430, 57043), (1595, 51142), (1885, 43274), (1967, 41470), (2002, 40745), (2030, 40183), (2233, 36530), (2639, 30910), (2810, 29029), (3091, 26390), (3190, 25571), (3653, 22330), (3770, 21637), (3934, 20735), (4147, 19670), (4466, 18265), (5005, 16298), (5278, 15455), (6182, 13195), (7306, 11165), (8149, 10010), (8294, 9835)]