20778678

素因数分解:

$2^1\times 3^2\times {\mathrm{179}}^1\times {\mathrm{6449}}^1$

素因数の和:6636

約数の個数: 24

約数和(自身を含む): 45279000

約数和(自身を除く): 24500322

約数列:

[1, 2, 3, 6, 9, 18, 179, 358, 537, 1074, 1611, 3222, 6449, 12898, 19347, 38694, 58041, 116082, 1154371, 2308742, 3463113, 6926226, 10389339, 20778678]

約数ペア:

[(1, 20778678), (2, 10389339), (3, 6926226), (6, 3463113), (9, 2308742), (18, 1154371), (179, 116082), (358, 58041), (537, 38694), (1074, 19347), (1611, 12898), (3222, 6449)]