127678760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{661}}^1$

素因数の和:1122

約数の個数: 64

約数和(自身を含む): 314582400

約数和(自身を除く): 186903640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 439, 440, 661, 878, 1322, 1756, 2195, 2644, 3305, 3512, 4390, 4829, 5288, 6610, 7271, 8780, 9658, 13220, 14542, 17560, 19316, 24145, 26440, 29084, 36355, 38632, 48290, 58168, 72710, 96580, 145420, 193160, 290179, 290840, 580358, 1160716, 1450895, 2321432, 2901790, 3191969, 5803580, 6383938, 11607160, 12767876, 15959845, 25535752, 31919690, 63839380, 127678760]

約数ペア:

[(1, 127678760), (2, 63839380), (4, 31919690), (5, 25535752), (8, 15959845), (10, 12767876), (11, 11607160), (20, 6383938), (22, 5803580), (40, 3191969), (44, 2901790), (55, 2321432), (88, 1450895), (110, 1160716), (220, 580358), (439, 290840), (440, 290179), (661, 193160), (878, 145420), (1322, 96580), (1756, 72710), (2195, 58168), (2644, 48290), (3305, 38632), (3512, 36355), (4390, 29084), (4829, 26440), (5288, 24145), (6610, 19316), (7271, 17560), (8780, 14542), (9658, 13220)]