771131240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{811}}^1\times {\mathrm{2161}}^1$

素因数の和:2994

約数の個数: 64

約数和(自身を含む): 1895987520

約数和(自身を除く): 1124856280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 811, 1622, 2161, 3244, 4055, 4322, 6488, 8110, 8644, 8921, 10805, 16220, 17288, 17842, 21610, 23771, 32440, 35684, 43220, 44605, 47542, 71368, 86440, 89210, 95084, 118855, 178420, 190168, 237710, 356840, 475420, 950840, 1752571, 3505142, 7010284, 8762855, 14020568, 17525710, 19278281, 35051420, 38556562, 70102840, 77113124, 96391405, 154226248, 192782810, 385565620, 771131240]

約数ペア:

[(1, 771131240), (2, 385565620), (4, 192782810), (5, 154226248), (8, 96391405), (10, 77113124), (11, 70102840), (20, 38556562), (22, 35051420), (40, 19278281), (44, 17525710), (55, 14020568), (88, 8762855), (110, 7010284), (220, 3505142), (440, 1752571), (811, 950840), (1622, 475420), (2161, 356840), (3244, 237710), (4055, 190168), (4322, 178420), (6488, 118855), (8110, 95084), (8644, 89210), (8921, 86440), (10805, 71368), (16220, 47542), (17288, 44605), (17842, 43220), (21610, 35684), (23771, 32440)]