20691054580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{82153}}^1$

素因数の和:82433

約数の個数: 72

約数和(自身を含む): 50742582408

約数和(自身を除く): 30051527828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 257, 490, 514, 980, 1028, 1285, 1799, 2570, 3598, 5140, 7196, 8995, 12593, 17990, 25186, 35980, 50372, 62965, 82153, 125930, 164306, 251860, 328612, 410765, 575071, 821530, 1150142, 1643060, 2300284, 2875355, 4025497, 5750710, 8050994, 11501420, 16101988, 20127485, 21113321, 40254970, 42226642, 80509940, 84453284, 105566605, 147793247, 211133210, 295586494, 422266420, 591172988, 738966235, 1034552729, 1477932470, 2069105458, 2955864940, 4138210916, 5172763645, 10345527290, 20691054580]

約数ペア:

[(1, 20691054580), (2, 10345527290), (4, 5172763645), (5, 4138210916), (7, 2955864940), (10, 2069105458), (14, 1477932470), (20, 1034552729), (28, 738966235), (35, 591172988), (49, 422266420), (70, 295586494), (98, 211133210), (140, 147793247), (196, 105566605), (245, 84453284), (257, 80509940), (490, 42226642), (514, 40254970), (980, 21113321), (1028, 20127485), (1285, 16101988), (1799, 11501420), (2570, 8050994), (3598, 5750710), (5140, 4025497), (7196, 2875355), (8995, 2300284), (12593, 1643060), (17990, 1150142), (25186, 821530), (35980, 575071), (50372, 410765), (62965, 328612), (82153, 251860), (125930, 164306)]