21513240

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8537}}^1$

素因数の和:8561

約数の個数: 96

約数和(自身を含む): 79915680

約数和(自身を除く): 58402440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8537, 17074, 25611, 34148, 42685, 51222, 59759, 68296, 76833, 85370, 102444, 119518, 128055, 153666, 170740, 179277, 204888, 239036, 256110, 298795, 307332, 341480, 358554, 384165, 478072, 512220, 537831, 597590, 614664, 717108, 768330, 896385, 1024440, 1075662, 1195180, 1434216, 1536660, 1792770, 2151324, 2390360, 2689155, 3073320, 3585540, 4302648, 5378310, 7171080, 10756620, 21513240]

約数ペア:

[(1, 21513240), (2, 10756620), (3, 7171080), (4, 5378310), (5, 4302648), (6, 3585540), (7, 3073320), (8, 2689155), (9, 2390360), (10, 2151324), (12, 1792770), (14, 1536660), (15, 1434216), (18, 1195180), (20, 1075662), (21, 1024440), (24, 896385), (28, 768330), (30, 717108), (35, 614664), (36, 597590), (40, 537831), (42, 512220), (45, 478072), (56, 384165), (60, 358554), (63, 341480), (70, 307332), (72, 298795), (84, 256110), (90, 239036), (105, 204888), (120, 179277), (126, 170740), (140, 153666), (168, 128055), (180, 119518), (210, 102444), (252, 85370), (280, 76833), (315, 68296), (360, 59759), (420, 51222), (504, 42685), (630, 34148), (840, 25611), (1260, 17074), (2520, 8537)]