129302920

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1\times {\mathrm{269}}^1$

素因数の和:538

約数の個数: 64

約数和(自身を含む): 298306800

約数和(自身を除く): 169003880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 197, 244, 269, 305, 394, 488, 538, 610, 788, 985, 1076, 1220, 1345, 1576, 1970, 2152, 2440, 2690, 3940, 5380, 7880, 10760, 12017, 16409, 24034, 32818, 48068, 52993, 60085, 65636, 82045, 96136, 105986, 120170, 131272, 164090, 211972, 240340, 264965, 328180, 423944, 480680, 529930, 656360, 1059860, 2119720, 3232573, 6465146, 12930292, 16162865, 25860584, 32325730, 64651460, 129302920]

約数ペア:

[(1, 129302920), (2, 64651460), (4, 32325730), (5, 25860584), (8, 16162865), (10, 12930292), (20, 6465146), (40, 3232573), (61, 2119720), (122, 1059860), (197, 656360), (244, 529930), (269, 480680), (305, 423944), (394, 328180), (488, 264965), (538, 240340), (610, 211972), (788, 164090), (985, 131272), (1076, 120170), (1220, 105986), (1345, 96136), (1576, 82045), (1970, 65636), (2152, 60085), (2440, 52993), (2690, 48068), (3940, 32818), (5380, 24034), (7880, 16409), (10760, 12017)]