217494640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2777}}^1$

素因数の和:2890

約数の個数: 80

約数和(自身を含む): 558044640

約数和(自身を除く): 340550000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 89, 110, 176, 178, 220, 356, 440, 445, 712, 880, 890, 979, 1424, 1780, 1958, 2777, 3560, 3916, 4895, 5554, 7120, 7832, 9790, 11108, 13885, 15664, 19580, 22216, 27770, 30547, 39160, 44432, 55540, 61094, 78320, 111080, 122188, 152735, 222160, 244376, 247153, 305470, 488752, 494306, 610940, 988612, 1221880, 1235765, 1977224, 2443760, 2471530, 2718683, 3954448, 4943060, 5437366, 9886120, 10874732, 13593415, 19772240, 21749464, 27186830, 43498928, 54373660, 108747320, 217494640]

約数ペア:

[(1, 217494640), (2, 108747320), (4, 54373660), (5, 43498928), (8, 27186830), (10, 21749464), (11, 19772240), (16, 13593415), (20, 10874732), (22, 9886120), (40, 5437366), (44, 4943060), (55, 3954448), (80, 2718683), (88, 2471530), (89, 2443760), (110, 1977224), (176, 1235765), (178, 1221880), (220, 988612), (356, 610940), (440, 494306), (445, 488752), (712, 305470), (880, 247153), (890, 244376), (979, 222160), (1424, 152735), (1780, 122188), (1958, 111080), (2777, 78320), (3560, 61094), (3916, 55540), (4895, 44432), (5554, 39160), (7120, 30547), (7832, 27770), (9790, 22216), (11108, 19580), (13885, 15664)]