20120221160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{899831}}^1$

素因数の和:899898

約数の個数: 64

約数和(自身を含む): 49886686080

約数和(自身を除く): 29766464920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 860, 1118, 1720, 2236, 2795, 4472, 5590, 11180, 22360, 899831, 1799662, 3599324, 4499155, 7198648, 8998310, 11697803, 17996620, 23395606, 35993240, 38692733, 46791212, 58489015, 77385466, 93582424, 116978030, 154770932, 193463665, 233956060, 309541864, 386927330, 467912120, 503005529, 773854660, 1006011058, 1547709320, 2012022116, 2515027645, 4024044232, 5030055290, 10060110580, 20120221160]

約数ペア:

[(1, 20120221160), (2, 10060110580), (4, 5030055290), (5, 4024044232), (8, 2515027645), (10, 2012022116), (13, 1547709320), (20, 1006011058), (26, 773854660), (40, 503005529), (43, 467912120), (52, 386927330), (65, 309541864), (86, 233956060), (104, 193463665), (130, 154770932), (172, 116978030), (215, 93582424), (260, 77385466), (344, 58489015), (430, 46791212), (520, 38692733), (559, 35993240), (860, 23395606), (1118, 17996620), (1720, 11697803), (2236, 8998310), (2795, 7198648), (4472, 4499155), (5590, 3599324), (11180, 1799662), (22360, 899831)]