21537327

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{21821}}^1$

素因数の和:21878

約数の個数: 16

約数和(自身を含む): 33518592

約数和(自身を除く): 11981265

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 21821, 65463, 152747, 458241, 1025587, 3076761, 7179109, 21537327]

約数ペア:

[(1, 21537327), (3, 7179109), (7, 3076761), (21, 1025587), (47, 458241), (141, 152747), (329, 65463), (987, 21821)]