21051100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:128

約数の個数: 144

約数和(自身を含む): 58121280

約数和(自身を除く): 37070180

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 25, 28, 29, 34, 35, 50, 58, 61, 68, 70, 85, 100, 116, 119, 122, 140, 145, 170, 175, 203, 238, 244, 290, 305, 340, 350, 406, 425, 427, 476, 493, 580, 595, 610, 700, 725, 812, 850, 854, 986, 1015, 1037, 1190, 1220, 1450, 1525, 1700, 1708, 1769, 1972, 2030, 2074, 2135, 2380, 2465, 2900, 2975, 3050, 3451, 3538, 4060, 4148, 4270, 4930, 5075, 5185, 5950, 6100, 6902, 7076, 7259, 8540, 8845, 9860, 10150, 10370, 10675, 11900, 12325, 12383, 13804, 14518, 17255, 17690, 20300, 20740, 21350, 24650, 24766, 25925, 29036, 30073, 34510, 35380, 36295, 42700, 44225, 49300, 49532, 51850, 60146, 61915, 69020, 72590, 86275, 88450, 103700, 120292, 123830, 145180, 150365, 172550, 176900, 181475, 210511, 247660, 300730, 309575, 345100, 362950, 421022, 601460, 619150, 725900, 751825, 842044, 1052555, 1238300, 1503650, 2105110, 3007300, 4210220, 5262775, 10525550, 21051100]

約数ペア:

[(1, 21051100), (2, 10525550), (4, 5262775), (5, 4210220), (7, 3007300), (10, 2105110), (14, 1503650), (17, 1238300), (20, 1052555), (25, 842044), (28, 751825), (29, 725900), (34, 619150), (35, 601460), (50, 421022), (58, 362950), (61, 345100), (68, 309575), (70, 300730), (85, 247660), (100, 210511), (116, 181475), (119, 176900), (122, 172550), (140, 150365), (145, 145180), (170, 123830), (175, 120292), (203, 103700), (238, 88450), (244, 86275), (290, 72590), (305, 69020), (340, 61915), (350, 60146), (406, 51850), (425, 49532), (427, 49300), (476, 44225), (493, 42700), (580, 36295), (595, 35380), (610, 34510), (700, 30073), (725, 29036), (812, 25925), (850, 24766), (854, 24650), (986, 21350), (1015, 20740), (1037, 20300), (1190, 17690), (1220, 17255), (1450, 14518), (1525, 13804), (1700, 12383), (1708, 12325), (1769, 11900), (1972, 10675), (2030, 10370), (2074, 10150), (2135, 9860), (2380, 8845), (2465, 8540), (2900, 7259), (2975, 7076), (3050, 6902), (3451, 6100), (3538, 5950), (4060, 5185), (4148, 5075), (4270, 4930)]