18912040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9649}}^1$

素因数の和:9674

約数の個数: 48

約数和(自身を含む): 49504500

約数和(自身を除く): 30592460

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 9649, 19298, 38596, 48245, 67543, 77192, 96490, 135086, 192980, 270172, 337715, 385960, 472801, 540344, 675430, 945602, 1350860, 1891204, 2364005, 2701720, 3782408, 4728010, 9456020, 18912040]

約数ペア:

[(1, 18912040), (2, 9456020), (4, 4728010), (5, 3782408), (7, 2701720), (8, 2364005), (10, 1891204), (14, 1350860), (20, 945602), (28, 675430), (35, 540344), (40, 472801), (49, 385960), (56, 337715), (70, 270172), (98, 192980), (140, 135086), (196, 96490), (245, 77192), (280, 67543), (392, 48245), (490, 38596), (980, 19298), (1960, 9649)]