21470680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6971}}^1$

素因数の和:7000

約数の個数: 64

約数和(自身を含む): 60238080

約数和(自身を除く): 38767400

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6971, 13942, 27884, 34855, 48797, 55768, 69710, 76681, 97594, 139420, 153362, 195188, 243985, 278840, 306724, 383405, 390376, 487970, 536767, 613448, 766810, 975940, 1073534, 1533620, 1951880, 2147068, 2683835, 3067240, 4294136, 5367670, 10735340, 21470680]

約数ペア:

[(1, 21470680), (2, 10735340), (4, 5367670), (5, 4294136), (7, 3067240), (8, 2683835), (10, 2147068), (11, 1951880), (14, 1533620), (20, 1073534), (22, 975940), (28, 766810), (35, 613448), (40, 536767), (44, 487970), (55, 390376), (56, 383405), (70, 306724), (77, 278840), (88, 243985), (110, 195188), (140, 153362), (154, 139420), (220, 97594), (280, 76681), (308, 69710), (385, 55768), (440, 48797), (616, 34855), (770, 27884), (1540, 13942), (3080, 6971)]