18538460

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{211}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 41029632

約数和(自身を除く): 22491172

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 191, 211, 230, 382, 422, 460, 764, 844, 955, 1055, 1910, 2110, 3820, 4220, 4393, 4853, 8786, 9706, 17572, 19412, 21965, 24265, 40301, 43930, 48530, 80602, 87860, 97060, 161204, 201505, 403010, 806020, 926923, 1853846, 3707692, 4634615, 9269230, 18538460]

約数ペア:

[(1, 18538460), (2, 9269230), (4, 4634615), (5, 3707692), (10, 1853846), (20, 926923), (23, 806020), (46, 403010), (92, 201505), (115, 161204), (191, 97060), (211, 87860), (230, 80602), (382, 48530), (422, 43930), (460, 40301), (764, 24265), (844, 21965), (955, 19412), (1055, 17572), (1910, 9706), (2110, 8786), (3820, 4853), (4220, 4393)]