20173888720

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^2\times {\mathrm{79}}^1\times {\mathrm{599}}^1$

素因数の和:837

約数の個数: 120

約数和(自身を含む): 48237984000

約数和(自身を除く): 28064095280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 79, 80, 146, 158, 292, 316, 365, 395, 584, 599, 632, 730, 790, 1168, 1198, 1264, 1460, 1580, 2396, 2920, 2995, 3160, 4792, 5329, 5767, 5840, 5990, 6320, 9584, 10658, 11534, 11980, 21316, 23068, 23960, 26645, 28835, 42632, 43727, 46136, 47321, 47920, 53290, 57670, 85264, 87454, 92272, 94642, 106580, 115340, 174908, 189284, 213160, 218635, 230680, 236605, 349816, 378568, 420991, 426320, 437270, 461360, 473210, 699632, 757136, 841982, 874540, 946420, 1683964, 1749080, 1892840, 2104955, 3192071, 3367928, 3454433, 3498160, 3785680, 4209910, 6384142, 6735856, 6908866, 8419820, 12768284, 13817732, 15960355, 16839640, 17272165, 25536568, 27635464, 31920710, 33679280, 34544330, 51073136, 55270928, 63841420, 69088660, 127682840, 138177320, 252173609, 255365680, 276354640, 504347218, 1008694436, 1260868045, 2017388872, 2521736090, 4034777744, 5043472180, 10086944360, 20173888720]

約数ペア:

[(1, 20173888720), (2, 10086944360), (4, 5043472180), (5, 4034777744), (8, 2521736090), (10, 2017388872), (16, 1260868045), (20, 1008694436), (40, 504347218), (73, 276354640), (79, 255365680), (80, 252173609), (146, 138177320), (158, 127682840), (292, 69088660), (316, 63841420), (365, 55270928), (395, 51073136), (584, 34544330), (599, 33679280), (632, 31920710), (730, 27635464), (790, 25536568), (1168, 17272165), (1198, 16839640), (1264, 15960355), (1460, 13817732), (1580, 12768284), (2396, 8419820), (2920, 6908866), (2995, 6735856), (3160, 6384142), (4792, 4209910), (5329, 3785680), (5767, 3498160), (5840, 3454433), (5990, 3367928), (6320, 3192071), (9584, 2104955), (10658, 1892840), (11534, 1749080), (11980, 1683964), (21316, 946420), (23068, 874540), (23960, 841982), (26645, 757136), (28835, 699632), (42632, 473210), (43727, 461360), (46136, 437270), (47321, 426320), (47920, 420991), (53290, 378568), (57670, 349816), (85264, 236605), (87454, 230680), (92272, 218635), (94642, 213160), (106580, 189284), (115340, 174908)]