28013991

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1\times {\mathrm{443}}^1$

素因数の和:750

約数の個数: 16

約数和(自身を含む): 37977984

約数和(自身を除く): 9963993

約数列:

[1, 3, 107, 197, 321, 443, 591, 1329, 21079, 47401, 63237, 87271, 142203, 261813, 9337997, 28013991]

約数ペア:

[(1, 28013991), (3, 9337997), (107, 261813), (197, 142203), (321, 87271), (443, 63237), (591, 47401), (1329, 21079)]