20786969560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{509}}^1\times {\mathrm{929}}^1$

素因数の和:1613

約数の個数: 128

約数和(自身を含む): 53956368000

約数和(自身を除く): 33169398440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 157, 280, 314, 509, 628, 785, 929, 1018, 1099, 1256, 1570, 1858, 2036, 2198, 2545, 3140, 3563, 3716, 4072, 4396, 4645, 5090, 5495, 6280, 6503, 7126, 7432, 8792, 9290, 10180, 10990, 13006, 14252, 17815, 18580, 20360, 21980, 26012, 28504, 32515, 35630, 37160, 43960, 52024, 65030, 71260, 79913, 130060, 142520, 145853, 159826, 260120, 291706, 319652, 399565, 472861, 559391, 583412, 639304, 729265, 799130, 945722, 1020971, 1118782, 1166824, 1458530, 1598260, 1891444, 2041942, 2237564, 2364305, 2796955, 2917060, 3196520, 3310027, 3782888, 4083884, 4475128, 4728610, 5104855, 5593910, 5834120, 6620054, 8167768, 9457220, 10209710, 11187820, 13240108, 16550135, 18914440, 20419420, 22375640, 26480216, 33100270, 40838840, 66200540, 74239177, 132401080, 148478354, 296956708, 371195885, 519674239, 593913416, 742391770, 1039348478, 1484783540, 2078696956, 2598371195, 2969567080, 4157393912, 5196742390, 10393484780, 20786969560]

約数ペア:

[(1, 20786969560), (2, 10393484780), (4, 5196742390), (5, 4157393912), (7, 2969567080), (8, 2598371195), (10, 2078696956), (14, 1484783540), (20, 1039348478), (28, 742391770), (35, 593913416), (40, 519674239), (56, 371195885), (70, 296956708), (140, 148478354), (157, 132401080), (280, 74239177), (314, 66200540), (509, 40838840), (628, 33100270), (785, 26480216), (929, 22375640), (1018, 20419420), (1099, 18914440), (1256, 16550135), (1570, 13240108), (1858, 11187820), (2036, 10209710), (2198, 9457220), (2545, 8167768), (3140, 6620054), (3563, 5834120), (3716, 5593910), (4072, 5104855), (4396, 4728610), (4645, 4475128), (5090, 4083884), (5495, 3782888), (6280, 3310027), (6503, 3196520), (7126, 2917060), (7432, 2796955), (8792, 2364305), (9290, 2237564), (10180, 2041942), (10990, 1891444), (13006, 1598260), (14252, 1458530), (17815, 1166824), (18580, 1118782), (20360, 1020971), (21980, 945722), (26012, 799130), (28504, 729265), (32515, 639304), (35630, 583412), (37160, 559391), (43960, 472861), (52024, 399565), (65030, 319652), (71260, 291706), (79913, 260120), (130060, 159826), (142520, 145853)]