21488380

素因数分解:

$2^2\times 5^1\times {\mathrm{983}}^1\times {\mathrm{1093}}^1$

素因数の和:2085

約数の個数: 24

約数和(自身を含む): 45212832

約数和(自身を除く): 23724452

約数列:

[1, 2, 4, 5, 10, 20, 983, 1093, 1966, 2186, 3932, 4372, 4915, 5465, 9830, 10930, 19660, 21860, 1074419, 2148838, 4297676, 5372095, 10744190, 21488380]

約数ペア:

[(1, 21488380), (2, 10744190), (4, 5372095), (5, 4297676), (10, 2148838), (20, 1074419), (983, 21860), (1093, 19660), (1966, 10930), (2186, 9830), (3932, 5465), (4372, 4915)]