21002520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2273}}^1$

素因数の和:2305

約数の個数: 128

約数和(自身を含む): 78589440

約数和(自身を除く): 57586920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 77, 84, 88, 105, 110, 120, 132, 140, 154, 165, 168, 210, 220, 231, 264, 280, 308, 330, 385, 420, 440, 462, 616, 660, 770, 840, 924, 1155, 1320, 1540, 1848, 2273, 2310, 3080, 4546, 4620, 6819, 9092, 9240, 11365, 13638, 15911, 18184, 22730, 25003, 27276, 31822, 34095, 45460, 47733, 50006, 54552, 63644, 68190, 75009, 79555, 90920, 95466, 100012, 125015, 127288, 136380, 150018, 159110, 175021, 190932, 200024, 238665, 250030, 272760, 300036, 318220, 350042, 375045, 381864, 477330, 500060, 525063, 600072, 636440, 700084, 750090, 875105, 954660, 1000120, 1050126, 1400168, 1500180, 1750210, 1909320, 2100252, 2625315, 3000360, 3500420, 4200504, 5250630, 7000840, 10501260, 21002520]

約数ペア:

[(1, 21002520), (2, 10501260), (3, 7000840), (4, 5250630), (5, 4200504), (6, 3500420), (7, 3000360), (8, 2625315), (10, 2100252), (11, 1909320), (12, 1750210), (14, 1500180), (15, 1400168), (20, 1050126), (21, 1000120), (22, 954660), (24, 875105), (28, 750090), (30, 700084), (33, 636440), (35, 600072), (40, 525063), (42, 500060), (44, 477330), (55, 381864), (56, 375045), (60, 350042), (66, 318220), (70, 300036), (77, 272760), (84, 250030), (88, 238665), (105, 200024), (110, 190932), (120, 175021), (132, 159110), (140, 150018), (154, 136380), (165, 127288), (168, 125015), (210, 100012), (220, 95466), (231, 90920), (264, 79555), (280, 75009), (308, 68190), (330, 63644), (385, 54552), (420, 50006), (440, 47733), (462, 45460), (616, 34095), (660, 31822), (770, 27276), (840, 25003), (924, 22730), (1155, 18184), (1320, 15911), (1540, 13638), (1848, 11365), (2273, 9240), (2310, 9092), (3080, 6819), (4546, 4620)]