20992400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1$

素因数の和:409

約数の個数: 120

約数和(自身を含む): 59412864

約数和(自身を除く): 38420464

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 25, 26, 40, 44, 50, 52, 55, 65, 80, 88, 100, 104, 110, 130, 143, 176, 200, 208, 220, 260, 275, 286, 325, 367, 400, 440, 520, 550, 572, 650, 715, 734, 880, 1040, 1100, 1144, 1300, 1430, 1468, 1835, 2200, 2288, 2600, 2860, 2936, 3575, 3670, 4037, 4400, 4771, 5200, 5720, 5872, 7150, 7340, 8074, 9175, 9542, 11440, 14300, 14680, 16148, 18350, 19084, 20185, 23855, 28600, 29360, 32296, 36700, 38168, 40370, 47710, 52481, 57200, 64592, 73400, 76336, 80740, 95420, 100925, 104962, 119275, 146800, 161480, 190840, 201850, 209924, 238550, 262405, 322960, 381680, 403700, 419848, 477100, 524810, 807400, 839696, 954200, 1049620, 1312025, 1614800, 1908400, 2099240, 2624050, 4198480, 5248100, 10496200, 20992400]

約数ペア:

[(1, 20992400), (2, 10496200), (4, 5248100), (5, 4198480), (8, 2624050), (10, 2099240), (11, 1908400), (13, 1614800), (16, 1312025), (20, 1049620), (22, 954200), (25, 839696), (26, 807400), (40, 524810), (44, 477100), (50, 419848), (52, 403700), (55, 381680), (65, 322960), (80, 262405), (88, 238550), (100, 209924), (104, 201850), (110, 190840), (130, 161480), (143, 146800), (176, 119275), (200, 104962), (208, 100925), (220, 95420), (260, 80740), (275, 76336), (286, 73400), (325, 64592), (367, 57200), (400, 52481), (440, 47710), (520, 40370), (550, 38168), (572, 36700), (650, 32296), (715, 29360), (734, 28600), (880, 23855), (1040, 20185), (1100, 19084), (1144, 18350), (1300, 16148), (1430, 14680), (1468, 14300), (1835, 11440), (2200, 9542), (2288, 9175), (2600, 8074), (2860, 7340), (2936, 7150), (3575, 5872), (3670, 5720), (4037, 5200), (4400, 4771)]