21670120

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1709}}^1$

素因数の和:2037

約数の個数: 32

約数和(自身を含む): 48940200

約数和(自身を除く): 27270080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 1709, 2536, 3170, 3418, 6340, 6836, 8545, 12680, 13672, 17090, 34180, 68360, 541753, 1083506, 2167012, 2708765, 4334024, 5417530, 10835060, 21670120]

約数ペア:

[(1, 21670120), (2, 10835060), (4, 5417530), (5, 4334024), (8, 2708765), (10, 2167012), (20, 1083506), (40, 541753), (317, 68360), (634, 34180), (1268, 17090), (1585, 13672), (1709, 12680), (2536, 8545), (3170, 6836), (3418, 6340)]