21056700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:332

約数の個数: 144

約数和(自身を含む): 71773184

約数和(自身を除く): 50716484

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 37, 42, 50, 60, 70, 74, 75, 84, 100, 105, 111, 140, 148, 150, 175, 185, 210, 222, 259, 271, 300, 350, 370, 420, 444, 518, 525, 542, 555, 700, 740, 777, 813, 925, 1036, 1050, 1084, 1110, 1295, 1355, 1554, 1626, 1850, 1897, 2100, 2220, 2590, 2710, 2775, 3108, 3252, 3700, 3794, 3885, 4065, 5180, 5420, 5550, 5691, 6475, 6775, 7588, 7770, 8130, 9485, 10027, 11100, 11382, 12950, 13550, 15540, 16260, 18970, 19425, 20054, 20325, 22764, 25900, 27100, 28455, 30081, 37940, 38850, 40108, 40650, 47425, 50135, 56910, 60162, 70189, 77700, 81300, 94850, 100270, 113820, 120324, 140378, 142275, 150405, 189700, 200540, 210567, 250675, 280756, 284550, 300810, 350945, 421134, 501350, 569100, 601620, 701890, 752025, 842268, 1002700, 1052835, 1403780, 1504050, 1754725, 2105670, 3008100, 3509450, 4211340, 5264175, 7018900, 10528350, 21056700]

約数ペア:

[(1, 21056700), (2, 10528350), (3, 7018900), (4, 5264175), (5, 4211340), (6, 3509450), (7, 3008100), (10, 2105670), (12, 1754725), (14, 1504050), (15, 1403780), (20, 1052835), (21, 1002700), (25, 842268), (28, 752025), (30, 701890), (35, 601620), (37, 569100), (42, 501350), (50, 421134), (60, 350945), (70, 300810), (74, 284550), (75, 280756), (84, 250675), (100, 210567), (105, 200540), (111, 189700), (140, 150405), (148, 142275), (150, 140378), (175, 120324), (185, 113820), (210, 100270), (222, 94850), (259, 81300), (271, 77700), (300, 70189), (350, 60162), (370, 56910), (420, 50135), (444, 47425), (518, 40650), (525, 40108), (542, 38850), (555, 37940), (700, 30081), (740, 28455), (777, 27100), (813, 25900), (925, 22764), (1036, 20325), (1050, 20054), (1084, 19425), (1110, 18970), (1295, 16260), (1355, 15540), (1554, 13550), (1626, 12950), (1850, 11382), (1897, 11100), (2100, 10027), (2220, 9485), (2590, 8130), (2710, 7770), (2775, 7588), (3108, 6775), (3252, 6475), (3700, 5691), (3794, 5550), (3885, 5420), (4065, 5180)]