21535080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{827}}^1$

素因数の和:879

約数の個数: 128

約数和(自身を含む): 76308480

約数和(自身を除く): 54773400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 827, 840, 868, 930, 1085, 1240, 1302, 1654, 1736, 1860, 2170, 2481, 2604, 3255, 3308, 3720, 4135, 4340, 4962, 5208, 5789, 6510, 6616, 8270, 8680, 9924, 11578, 12405, 13020, 16540, 17367, 19848, 23156, 24810, 25637, 26040, 28945, 33080, 34734, 46312, 49620, 51274, 57890, 69468, 76911, 86835, 99240, 102548, 115780, 128185, 138936, 153822, 173670, 179459, 205096, 231560, 256370, 307644, 347340, 358918, 384555, 512740, 538377, 615288, 694680, 717836, 769110, 897295, 1025480, 1076754, 1435672, 1538220, 1794590, 2153508, 2691885, 3076440, 3589180, 4307016, 5383770, 7178360, 10767540, 21535080]

約数ペア:

[(1, 21535080), (2, 10767540), (3, 7178360), (4, 5383770), (5, 4307016), (6, 3589180), (7, 3076440), (8, 2691885), (10, 2153508), (12, 1794590), (14, 1538220), (15, 1435672), (20, 1076754), (21, 1025480), (24, 897295), (28, 769110), (30, 717836), (31, 694680), (35, 615288), (40, 538377), (42, 512740), (56, 384555), (60, 358918), (62, 347340), (70, 307644), (84, 256370), (93, 231560), (105, 205096), (120, 179459), (124, 173670), (140, 153822), (155, 138936), (168, 128185), (186, 115780), (210, 102548), (217, 99240), (248, 86835), (280, 76911), (310, 69468), (372, 57890), (420, 51274), (434, 49620), (465, 46312), (620, 34734), (651, 33080), (744, 28945), (827, 26040), (840, 25637), (868, 24810), (930, 23156), (1085, 19848), (1240, 17367), (1302, 16540), (1654, 13020), (1736, 12405), (1860, 11578), (2170, 9924), (2481, 8680), (2604, 8270), (3255, 6616), (3308, 6510), (3720, 5789), (4135, 5208), (4340, 4962)]