218680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1$

素因数の和:100

約数の個数: 64

約数和(自身を含む): 622080

約数和(自身を除く): 403400

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 71, 77, 88, 110, 140, 142, 154, 220, 280, 284, 308, 355, 385, 440, 497, 568, 616, 710, 770, 781, 994, 1420, 1540, 1562, 1988, 2485, 2840, 3080, 3124, 3905, 3976, 4970, 5467, 6248, 7810, 9940, 10934, 15620, 19880, 21868, 27335, 31240, 43736, 54670, 109340, 218680]

約数ペア:

[(1, 218680), (2, 109340), (4, 54670), (5, 43736), (7, 31240), (8, 27335), (10, 21868), (11, 19880), (14, 15620), (20, 10934), (22, 9940), (28, 7810), (35, 6248), (40, 5467), (44, 4970), (55, 3976), (56, 3905), (70, 3124), (71, 3080), (77, 2840), (88, 2485), (110, 1988), (140, 1562), (142, 1540), (154, 1420), (220, 994), (280, 781), (284, 770), (308, 710), (355, 616), (385, 568), (440, 497)]