21287768

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{50207}}^1$

素因数の和:50266

約数の個数: 16

約数和(自身を含む): 40668480

約数和(自身を除く): 19380712

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 50207, 100414, 200828, 401656, 2660971, 5321942, 10643884, 21287768]

約数ペア:

[(1, 21287768), (2, 10643884), (4, 5321942), (8, 2660971), (53, 401656), (106, 200828), (212, 100414), (424, 50207)]