21153400

素因数分解:

$2^3\times 5^2\times {\mathrm{105767}}^1$

素因数の和:105783

約数の個数: 24

約数和(自身を含む): 49182120

約数和(自身を除く): 28028720

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 105767, 211534, 423068, 528835, 846136, 1057670, 2115340, 2644175, 4230680, 5288350, 10576700, 21153400]

約数ペア:

[(1, 21153400), (2, 10576700), (4, 5288350), (5, 4230680), (8, 2644175), (10, 2115340), (20, 1057670), (25, 846136), (40, 528835), (50, 423068), (100, 211534), (200, 105767)]