16988580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:258

約数の個数: 144

約数和(自身を含む): 59928960

約数和(自身を除く): 42940380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 97, 105, 126, 139, 140, 180, 194, 210, 252, 278, 291, 315, 388, 417, 420, 485, 556, 582, 630, 679, 695, 834, 873, 970, 973, 1164, 1251, 1260, 1358, 1390, 1455, 1668, 1746, 1940, 1946, 2037, 2085, 2502, 2716, 2780, 2910, 2919, 3395, 3492, 3892, 4074, 4170, 4365, 4865, 5004, 5820, 5838, 6111, 6255, 6790, 8148, 8340, 8730, 8757, 9730, 10185, 11676, 12222, 12510, 13483, 13580, 14595, 17460, 17514, 19460, 20370, 24444, 25020, 26966, 29190, 30555, 35028, 40449, 40740, 43785, 53932, 58380, 61110, 67415, 80898, 87570, 94381, 121347, 122220, 134830, 161796, 175140, 188762, 202245, 242694, 269660, 283143, 377524, 404490, 471905, 485388, 566286, 606735, 808980, 849429, 943810, 1132572, 1213470, 1415715, 1698858, 1887620, 2426940, 2831430, 3397716, 4247145, 5662860, 8494290, 16988580]

約数ペア:

[(1, 16988580), (2, 8494290), (3, 5662860), (4, 4247145), (5, 3397716), (6, 2831430), (7, 2426940), (9, 1887620), (10, 1698858), (12, 1415715), (14, 1213470), (15, 1132572), (18, 943810), (20, 849429), (21, 808980), (28, 606735), (30, 566286), (35, 485388), (36, 471905), (42, 404490), (45, 377524), (60, 283143), (63, 269660), (70, 242694), (84, 202245), (90, 188762), (97, 175140), (105, 161796), (126, 134830), (139, 122220), (140, 121347), (180, 94381), (194, 87570), (210, 80898), (252, 67415), (278, 61110), (291, 58380), (315, 53932), (388, 43785), (417, 40740), (420, 40449), (485, 35028), (556, 30555), (582, 29190), (630, 26966), (679, 25020), (695, 24444), (834, 20370), (873, 19460), (970, 17514), (973, 17460), (1164, 14595), (1251, 13580), (1260, 13483), (1358, 12510), (1390, 12222), (1455, 11676), (1668, 10185), (1746, 9730), (1940, 8757), (1946, 8730), (2037, 8340), (2085, 8148), (2502, 6790), (2716, 6255), (2780, 6111), (2910, 5838), (2919, 5820), (3395, 5004), (3492, 4865), (3892, 4365), (4074, 4170)]