199816720

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{277}}^1$

素因数の和:488

約数の個数: 80

約数和(自身を含む): 476540928

約数和(自身を除く): 276724208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 127, 142, 254, 277, 284, 355, 508, 554, 568, 635, 710, 1016, 1108, 1136, 1270, 1385, 1420, 2032, 2216, 2540, 2770, 2840, 4432, 5080, 5540, 5680, 9017, 10160, 11080, 18034, 19667, 22160, 35179, 36068, 39334, 45085, 70358, 72136, 78668, 90170, 98335, 140716, 144272, 157336, 175895, 180340, 196670, 281432, 314672, 351790, 360680, 393340, 562864, 703580, 721360, 786680, 1407160, 1573360, 2497709, 2814320, 4995418, 9990836, 12488545, 19981672, 24977090, 39963344, 49954180, 99908360, 199816720]

約数ペア:

[(1, 199816720), (2, 99908360), (4, 49954180), (5, 39963344), (8, 24977090), (10, 19981672), (16, 12488545), (20, 9990836), (40, 4995418), (71, 2814320), (80, 2497709), (127, 1573360), (142, 1407160), (254, 786680), (277, 721360), (284, 703580), (355, 562864), (508, 393340), (554, 360680), (568, 351790), (635, 314672), (710, 281432), (1016, 196670), (1108, 180340), (1136, 175895), (1270, 157336), (1385, 144272), (1420, 140716), (2032, 98335), (2216, 90170), (2540, 78668), (2770, 72136), (2840, 70358), (4432, 45085), (5080, 39334), (5540, 36068), (5680, 35179), (9017, 22160), (10160, 19667), (11080, 18034)]