90400840

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{10711}}^1$

素因数の和:10933

約数の個数: 32

約数和(自身を含む): 204384960

約数和(自身を除く): 113984120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 10711, 21422, 42844, 53555, 85688, 107110, 214220, 428440, 2260021, 4520042, 9040084, 11300105, 18080168, 22600210, 45200420, 90400840]

約数ペア:

[(1, 90400840), (2, 45200420), (4, 22600210), (5, 18080168), (8, 11300105), (10, 9040084), (20, 4520042), (40, 2260021), (211, 428440), (422, 214220), (844, 107110), (1055, 85688), (1688, 53555), (2110, 42844), (4220, 21422), (8440, 10711)]