81613480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12073}}^1$

素因数の和:12110

約数の個数: 48

約数和(自身を含む): 198858780

約数和(自身を除く): 117245300

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 3380, 6760, 12073, 24146, 48292, 60365, 96584, 120730, 156949, 241460, 313898, 482920, 627796, 784745, 1255592, 1569490, 2040337, 3138980, 4080674, 6277960, 8161348, 10201685, 16322696, 20403370, 40806740, 81613480]

約数ペア:

[(1, 81613480), (2, 40806740), (4, 20403370), (5, 16322696), (8, 10201685), (10, 8161348), (13, 6277960), (20, 4080674), (26, 3138980), (40, 2040337), (52, 1569490), (65, 1255592), (104, 784745), (130, 627796), (169, 482920), (260, 313898), (338, 241460), (520, 156949), (676, 120730), (845, 96584), (1352, 60365), (1690, 48292), (3380, 24146), (6760, 12073)]