256486120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{197}}^1\times {\mathrm{269}}^1$

素因数の和:499

約数の個数: 96

約数和(自身を含む): 639916200

約数和(自身を除く): 383430080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 197, 220, 242, 269, 394, 440, 484, 538, 605, 788, 968, 985, 1076, 1210, 1345, 1576, 1970, 2152, 2167, 2420, 2690, 2959, 3940, 4334, 4840, 5380, 5918, 7880, 8668, 10760, 10835, 11836, 14795, 17336, 21670, 23672, 23837, 29590, 32549, 43340, 47674, 52993, 59180, 65098, 86680, 95348, 105986, 118360, 119185, 130196, 162745, 190696, 211972, 238370, 260392, 264965, 325490, 423944, 476740, 529930, 582923, 650980, 953480, 1059860, 1165846, 1301960, 2119720, 2331692, 2914615, 4663384, 5829230, 6412153, 11658460, 12824306, 23316920, 25648612, 32060765, 51297224, 64121530, 128243060, 256486120]

約数ペア:

[(1, 256486120), (2, 128243060), (4, 64121530), (5, 51297224), (8, 32060765), (10, 25648612), (11, 23316920), (20, 12824306), (22, 11658460), (40, 6412153), (44, 5829230), (55, 4663384), (88, 2914615), (110, 2331692), (121, 2119720), (197, 1301960), (220, 1165846), (242, 1059860), (269, 953480), (394, 650980), (440, 582923), (484, 529930), (538, 476740), (605, 423944), (788, 325490), (968, 264965), (985, 260392), (1076, 238370), (1210, 211972), (1345, 190696), (1576, 162745), (1970, 130196), (2152, 119185), (2167, 118360), (2420, 105986), (2690, 95348), (2959, 86680), (3940, 65098), (4334, 59180), (4840, 52993), (5380, 47674), (5918, 43340), (7880, 32549), (8668, 29590), (10760, 23837), (10835, 23672), (11836, 21670), (14795, 17336)]