210940

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 453600

約数和(自身を除く): 242660

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 199, 212, 265, 398, 530, 796, 995, 1060, 1990, 3980, 10547, 21094, 42188, 52735, 105470, 210940]

約数ペア:

[(1, 210940), (2, 105470), (4, 52735), (5, 42188), (10, 21094), (20, 10547), (53, 3980), (106, 1990), (199, 1060), (212, 995), (265, 796), (398, 530)]