18522680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:165

約数の個数: 96

約数和(自身を含む): 47401200

約数和(自身を除く): 28878520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 89, 110, 121, 172, 178, 215, 220, 242, 344, 356, 430, 440, 445, 473, 484, 605, 712, 860, 890, 946, 968, 979, 1210, 1720, 1780, 1892, 1958, 2365, 2420, 3560, 3784, 3827, 3916, 4730, 4840, 4895, 5203, 7654, 7832, 9460, 9790, 10406, 10769, 15308, 18920, 19135, 19580, 20812, 21538, 26015, 30616, 38270, 39160, 41624, 42097, 43076, 52030, 53845, 76540, 84194, 86152, 104060, 107690, 153080, 168388, 208120, 210485, 215380, 336776, 420970, 430760, 463067, 841940, 926134, 1683880, 1852268, 2315335, 3704536, 4630670, 9261340, 18522680]

約数ペア:

[(1, 18522680), (2, 9261340), (4, 4630670), (5, 3704536), (8, 2315335), (10, 1852268), (11, 1683880), (20, 926134), (22, 841940), (40, 463067), (43, 430760), (44, 420970), (55, 336776), (86, 215380), (88, 210485), (89, 208120), (110, 168388), (121, 153080), (172, 107690), (178, 104060), (215, 86152), (220, 84194), (242, 76540), (344, 53845), (356, 52030), (430, 43076), (440, 42097), (445, 41624), (473, 39160), (484, 38270), (605, 30616), (712, 26015), (860, 21538), (890, 20812), (946, 19580), (968, 19135), (979, 18920), (1210, 15308), (1720, 10769), (1780, 10406), (1892, 9790), (1958, 9460), (2365, 7832), (2420, 7654), (3560, 5203), (3784, 4895), (3827, 4840), (3916, 4730)]