21128208

素因数分解:

$2^4\times 3^1\times {\mathrm{440171}}^1$

素因数の和:440182

約数の個数: 20

約数和(自身を含む): 54581328

約数和(自身を除く): 33453120

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 440171, 880342, 1320513, 1760684, 2641026, 3521368, 5282052, 7042736, 10564104, 21128208]

約数ペア:

[(1, 21128208), (2, 10564104), (3, 7042736), (4, 5282052), (6, 3521368), (8, 2641026), (12, 1760684), (16, 1320513), (24, 880342), (48, 440171)]