21163720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27847}}^1$

素因数の和:27877

約数の個数: 32

約数和(自身を含む): 50126400

約数和(自身を除く): 28962680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27847, 55694, 111388, 139235, 222776, 278470, 529093, 556940, 1058186, 1113880, 2116372, 2645465, 4232744, 5290930, 10581860, 21163720]

約数ペア:

[(1, 21163720), (2, 10581860), (4, 5290930), (5, 4232744), (8, 2645465), (10, 2116372), (19, 1113880), (20, 1058186), (38, 556940), (40, 529093), (76, 278470), (95, 222776), (152, 139235), (190, 111388), (380, 55694), (760, 27847)]