21671280

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:228

約数の個数: 160

約数和(自身を含む): 76185600

約数和(自身を除く): 54514320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 79, 80, 90, 108, 120, 127, 135, 144, 158, 180, 216, 237, 240, 254, 270, 316, 360, 381, 395, 432, 474, 508, 540, 632, 635, 711, 720, 762, 790, 948, 1016, 1080, 1143, 1185, 1264, 1270, 1422, 1524, 1580, 1896, 1905, 2032, 2133, 2160, 2286, 2370, 2540, 2844, 3048, 3160, 3429, 3555, 3792, 3810, 4266, 4572, 4740, 5080, 5688, 5715, 6096, 6320, 6858, 7110, 7620, 8532, 9144, 9480, 10033, 10160, 10665, 11376, 11430, 13716, 14220, 15240, 17064, 17145, 18288, 18960, 20066, 21330, 22860, 27432, 28440, 30099, 30480, 34128, 34290, 40132, 42660, 45720, 50165, 54864, 56880, 60198, 68580, 80264, 85320, 90297, 91440, 100330, 120396, 137160, 150495, 160528, 170640, 180594, 200660, 240792, 270891, 274320, 300990, 361188, 401320, 451485, 481584, 541782, 601980, 722376, 802640, 902970, 1083564, 1203960, 1354455, 1444752, 1805940, 2167128, 2407920, 2708910, 3611880, 4334256, 5417820, 7223760, 10835640, 21671280]

約数ペア:

[(1, 21671280), (2, 10835640), (3, 7223760), (4, 5417820), (5, 4334256), (6, 3611880), (8, 2708910), (9, 2407920), (10, 2167128), (12, 1805940), (15, 1444752), (16, 1354455), (18, 1203960), (20, 1083564), (24, 902970), (27, 802640), (30, 722376), (36, 601980), (40, 541782), (45, 481584), (48, 451485), (54, 401320), (60, 361188), (72, 300990), (79, 274320), (80, 270891), (90, 240792), (108, 200660), (120, 180594), (127, 170640), (135, 160528), (144, 150495), (158, 137160), (180, 120396), (216, 100330), (237, 91440), (240, 90297), (254, 85320), (270, 80264), (316, 68580), (360, 60198), (381, 56880), (395, 54864), (432, 50165), (474, 45720), (508, 42660), (540, 40132), (632, 34290), (635, 34128), (711, 30480), (720, 30099), (762, 28440), (790, 27432), (948, 22860), (1016, 21330), (1080, 20066), (1143, 18960), (1185, 18288), (1264, 17145), (1270, 17064), (1422, 15240), (1524, 14220), (1580, 13716), (1896, 11430), (1905, 11376), (2032, 10665), (2133, 10160), (2160, 10033), (2286, 9480), (2370, 9144), (2540, 8532), (2844, 7620), (3048, 7110), (3160, 6858), (3429, 6320), (3555, 6096), (3792, 5715), (3810, 5688), (4266, 5080), (4572, 4740)]