21004276

素因数分解:

$2^2\times {\mathrm{127}}^1\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:543

約数の個数: 24

約数和(自身を含む): 37416960

約数和(自身を除く): 16412684

約数列:

[1, 2, 4, 127, 173, 239, 254, 346, 478, 508, 692, 956, 21971, 30353, 41347, 43942, 60706, 82694, 87884, 121412, 165388, 5251069, 10502138, 21004276]

約数ペア:

[(1, 21004276), (2, 10502138), (4, 5251069), (127, 165388), (173, 121412), (239, 87884), (254, 82694), (346, 60706), (478, 43942), (508, 41347), (692, 30353), (956, 21971)]