21139440

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12583}}^1$

素因数の和:12606

約数の個数: 80

約数和(自身を含む): 74899968

約数和(自身を除く): 53760528

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12583, 25166, 37749, 50332, 62915, 75498, 88081, 100664, 125830, 150996, 176162, 188745, 201328, 251660, 264243, 301992, 352324, 377490, 440405, 503320, 528486, 603984, 704648, 754980, 880810, 1006640, 1056972, 1321215, 1409296, 1509960, 1761620, 2113944, 2642430, 3019920, 3523240, 4227888, 5284860, 7046480, 10569720, 21139440]

約数ペア:

[(1, 21139440), (2, 10569720), (3, 7046480), (4, 5284860), (5, 4227888), (6, 3523240), (7, 3019920), (8, 2642430), (10, 2113944), (12, 1761620), (14, 1509960), (15, 1409296), (16, 1321215), (20, 1056972), (21, 1006640), (24, 880810), (28, 754980), (30, 704648), (35, 603984), (40, 528486), (42, 503320), (48, 440405), (56, 377490), (60, 352324), (70, 301992), (80, 264243), (84, 251660), (105, 201328), (112, 188745), (120, 176162), (140, 150996), (168, 125830), (210, 100664), (240, 88081), (280, 75498), (336, 62915), (420, 50332), (560, 37749), (840, 25166), (1680, 12583)]