21411800

素因数分解:

$2^3\times 5^2\times {\mathrm{151}}^1\times {\mathrm{709}}^1$

素因数の和:876

約数の個数: 48

約数和(自身を含む): 50182800

約数和(自身を除く): 28771000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 151, 200, 302, 604, 709, 755, 1208, 1418, 1510, 2836, 3020, 3545, 3775, 5672, 6040, 7090, 7550, 14180, 15100, 17725, 28360, 30200, 35450, 70900, 107059, 141800, 214118, 428236, 535295, 856472, 1070590, 2141180, 2676475, 4282360, 5352950, 10705900, 21411800]

約数ペア:

[(1, 21411800), (2, 10705900), (4, 5352950), (5, 4282360), (8, 2676475), (10, 2141180), (20, 1070590), (25, 856472), (40, 535295), (50, 428236), (100, 214118), (151, 141800), (200, 107059), (302, 70900), (604, 35450), (709, 30200), (755, 28360), (1208, 17725), (1418, 15100), (1510, 14180), (2836, 7550), (3020, 7090), (3545, 6040), (3775, 5672)]