21000751920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{212903}}^1$

素因数の和:213059

約数の個数: 120

約数和(自身を含む): 71042658336

約数和(自身を除く): 50041906416

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 137, 144, 180, 240, 274, 360, 411, 548, 685, 720, 822, 1096, 1233, 1370, 1644, 2055, 2192, 2466, 2740, 3288, 4110, 4932, 5480, 6165, 6576, 8220, 9864, 10960, 12330, 16440, 19728, 24660, 32880, 49320, 98640, 212903, 425806, 638709, 851612, 1064515, 1277418, 1703224, 1916127, 2129030, 2554836, 3193545, 3406448, 3832254, 4258060, 5109672, 6387090, 7664508, 8516120, 9580635, 10219344, 12774180, 15329016, 17032240, 19161270, 25548360, 29167711, 30658032, 38322540, 51096720, 58335422, 76645080, 87503133, 116670844, 145838555, 153290160, 175006266, 233341688, 262509399, 291677110, 350012532, 437515665, 466683376, 525018798, 583354220, 700025064, 875031330, 1050037596, 1166708440, 1312546995, 1400050128, 1750062660, 2100075192, 2333416880, 2625093990, 3500125320, 4200150384, 5250187980, 7000250640, 10500375960, 21000751920]

約数ペア:

[(1, 21000751920), (2, 10500375960), (3, 7000250640), (4, 5250187980), (5, 4200150384), (6, 3500125320), (8, 2625093990), (9, 2333416880), (10, 2100075192), (12, 1750062660), (15, 1400050128), (16, 1312546995), (18, 1166708440), (20, 1050037596), (24, 875031330), (30, 700025064), (36, 583354220), (40, 525018798), (45, 466683376), (48, 437515665), (60, 350012532), (72, 291677110), (80, 262509399), (90, 233341688), (120, 175006266), (137, 153290160), (144, 145838555), (180, 116670844), (240, 87503133), (274, 76645080), (360, 58335422), (411, 51096720), (548, 38322540), (685, 30658032), (720, 29167711), (822, 25548360), (1096, 19161270), (1233, 17032240), (1370, 15329016), (1644, 12774180), (2055, 10219344), (2192, 9580635), (2466, 8516120), (2740, 7664508), (3288, 6387090), (4110, 5109672), (4932, 4258060), (5480, 3832254), (6165, 3406448), (6576, 3193545), (8220, 2554836), (9864, 2129030), (10960, 1916127), (12330, 1703224), (16440, 1277418), (19728, 1064515), (24660, 851612), (32880, 638709), (49320, 425806), (98640, 212903)]