81951100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{367}}^1$

素因数の和:428

約数の個数: 144

約数和(自身を含む): 229985280

約数和(自身を除く): 148034180

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 29, 35, 44, 50, 55, 58, 70, 77, 100, 110, 116, 140, 145, 154, 175, 203, 220, 275, 290, 308, 319, 350, 367, 385, 406, 550, 580, 638, 700, 725, 734, 770, 812, 1015, 1100, 1276, 1450, 1468, 1540, 1595, 1835, 1925, 2030, 2233, 2569, 2900, 3190, 3670, 3850, 4037, 4060, 4466, 5075, 5138, 6380, 7340, 7700, 7975, 8074, 8932, 9175, 10150, 10276, 10643, 11165, 12845, 15950, 16148, 18350, 20185, 20300, 21286, 22330, 25690, 28259, 31900, 36700, 40370, 42572, 44660, 51380, 53215, 55825, 56518, 64225, 74501, 80740, 100925, 106430, 111650, 113036, 117073, 128450, 141295, 149002, 201850, 212860, 223300, 234146, 256900, 266075, 282590, 298004, 372505, 403700, 468292, 532150, 565180, 585365, 706475, 745010, 819511, 1064300, 1170730, 1412950, 1490020, 1639022, 1862525, 2341460, 2825900, 2926825, 3278044, 3725050, 4097555, 5853650, 7450100, 8195110, 11707300, 16390220, 20487775, 40975550, 81951100]

約数ペア:

[(1, 81951100), (2, 40975550), (4, 20487775), (5, 16390220), (7, 11707300), (10, 8195110), (11, 7450100), (14, 5853650), (20, 4097555), (22, 3725050), (25, 3278044), (28, 2926825), (29, 2825900), (35, 2341460), (44, 1862525), (50, 1639022), (55, 1490020), (58, 1412950), (70, 1170730), (77, 1064300), (100, 819511), (110, 745010), (116, 706475), (140, 585365), (145, 565180), (154, 532150), (175, 468292), (203, 403700), (220, 372505), (275, 298004), (290, 282590), (308, 266075), (319, 256900), (350, 234146), (367, 223300), (385, 212860), (406, 201850), (550, 149002), (580, 141295), (638, 128450), (700, 117073), (725, 113036), (734, 111650), (770, 106430), (812, 100925), (1015, 80740), (1100, 74501), (1276, 64225), (1450, 56518), (1468, 55825), (1540, 53215), (1595, 51380), (1835, 44660), (1925, 42572), (2030, 40370), (2233, 36700), (2569, 31900), (2900, 28259), (3190, 25690), (3670, 22330), (3850, 21286), (4037, 20300), (4060, 20185), (4466, 18350), (5075, 16148), (5138, 15950), (6380, 12845), (7340, 11165), (7700, 10643), (7975, 10276), (8074, 10150), (8932, 9175)]