21877380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{179}}^1$

素因数の和:298

約数の個数: 144

約数和(自身を含む): 77051520

約数和(自身を除く): 55174140

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, 140, 179, 180, 194, 210, 252, 291, 315, 358, 388, 420, 485, 537, 582, 630, 679, 716, 873, 895, 970, 1074, 1164, 1253, 1260, 1358, 1455, 1611, 1746, 1790, 1940, 2037, 2148, 2506, 2685, 2716, 2910, 3222, 3395, 3492, 3580, 3759, 4074, 4365, 5012, 5370, 5820, 6111, 6265, 6444, 6790, 7518, 8055, 8148, 8730, 10185, 10740, 11277, 12222, 12530, 13580, 15036, 16110, 17363, 17460, 18795, 20370, 22554, 24444, 25060, 30555, 32220, 34726, 37590, 40740, 45108, 52089, 56385, 61110, 69452, 75180, 86815, 104178, 112770, 121541, 122220, 156267, 173630, 208356, 225540, 243082, 260445, 312534, 347260, 364623, 486164, 520890, 607705, 625068, 729246, 781335, 1041780, 1093869, 1215410, 1458492, 1562670, 1823115, 2187738, 2430820, 3125340, 3646230, 4375476, 5469345, 7292460, 10938690, 21877380]

約数ペア:

[(1, 21877380), (2, 10938690), (3, 7292460), (4, 5469345), (5, 4375476), (6, 3646230), (7, 3125340), (9, 2430820), (10, 2187738), (12, 1823115), (14, 1562670), (15, 1458492), (18, 1215410), (20, 1093869), (21, 1041780), (28, 781335), (30, 729246), (35, 625068), (36, 607705), (42, 520890), (45, 486164), (60, 364623), (63, 347260), (70, 312534), (84, 260445), (90, 243082), (97, 225540), (105, 208356), (126, 173630), (140, 156267), (179, 122220), (180, 121541), (194, 112770), (210, 104178), (252, 86815), (291, 75180), (315, 69452), (358, 61110), (388, 56385), (420, 52089), (485, 45108), (537, 40740), (582, 37590), (630, 34726), (679, 32220), (716, 30555), (873, 25060), (895, 24444), (970, 22554), (1074, 20370), (1164, 18795), (1253, 17460), (1260, 17363), (1358, 16110), (1455, 15036), (1611, 13580), (1746, 12530), (1790, 12222), (1940, 11277), (2037, 10740), (2148, 10185), (2506, 8730), (2685, 8148), (2716, 8055), (2910, 7518), (3222, 6790), (3395, 6444), (3492, 6265), (3580, 6111), (3759, 5820), (4074, 5370), (4365, 5012)]