18219325

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{263}}^1$

素因数の和:453

約数の個数: 24

約数和(自身を含む): 24159168

約数和(自身を除く): 5939843

約数列:

[1, 5, 17, 25, 85, 163, 263, 425, 815, 1315, 2771, 4075, 4471, 6575, 13855, 22355, 42869, 69275, 111775, 214345, 728773, 1071725, 3643865, 18219325]

約数ペア:

[(1, 18219325), (5, 3643865), (17, 1071725), (25, 728773), (85, 214345), (163, 111775), (263, 69275), (425, 42869), (815, 22355), (1315, 13855), (2771, 6575), (4075, 4471)]