21057120

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{2089}}^1$

素因数の和:2117

約数の個数: 144

約数和(自身を含む): 82162080

約数和(自身を除く): 61104960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2089, 2520, 3360, 4178, 5040, 6267, 8356, 10080, 10445, 12534, 14623, 16712, 18801, 20890, 25068, 29246, 31335, 33424, 37602, 41780, 43869, 50136, 58492, 62670, 66848, 73115, 75204, 83560, 87738, 94005, 100272, 116984, 125340, 131607, 146230, 150408, 167120, 175476, 188010, 200544, 219345, 233968, 250680, 263214, 292460, 300816, 334240, 350952, 376020, 438690, 467936, 501360, 526428, 584920, 601632, 658035, 701904, 752040, 877380, 1002720, 1052856, 1169840, 1316070, 1403808, 1504080, 1754760, 2105712, 2339680, 2632140, 3008160, 3509520, 4211424, 5264280, 7019040, 10528560, 21057120]

約数ペア:

[(1, 21057120), (2, 10528560), (3, 7019040), (4, 5264280), (5, 4211424), (6, 3509520), (7, 3008160), (8, 2632140), (9, 2339680), (10, 2105712), (12, 1754760), (14, 1504080), (15, 1403808), (16, 1316070), (18, 1169840), (20, 1052856), (21, 1002720), (24, 877380), (28, 752040), (30, 701904), (32, 658035), (35, 601632), (36, 584920), (40, 526428), (42, 501360), (45, 467936), (48, 438690), (56, 376020), (60, 350952), (63, 334240), (70, 300816), (72, 292460), (80, 263214), (84, 250680), (90, 233968), (96, 219345), (105, 200544), (112, 188010), (120, 175476), (126, 167120), (140, 150408), (144, 146230), (160, 131607), (168, 125340), (180, 116984), (210, 100272), (224, 94005), (240, 87738), (252, 83560), (280, 75204), (288, 73115), (315, 66848), (336, 62670), (360, 58492), (420, 50136), (480, 43869), (504, 41780), (560, 37602), (630, 33424), (672, 31335), (720, 29246), (840, 25068), (1008, 20890), (1120, 18801), (1260, 16712), (1440, 14623), (1680, 12534), (2016, 10445), (2089, 10080), (2520, 8356), (3360, 6267), (4178, 5040)]