21149715

素因数分解:

$3^1\times 5^1\times {\mathrm{167}}^1\times {\mathrm{8443}}^1$

素因数の和:8618

約数の個数: 16

約数和(自身を含む): 34046208

約数和(自身を除く): 12896493

約数列:

[1, 3, 5, 15, 167, 501, 835, 2505, 8443, 25329, 42215, 126645, 1409981, 4229943, 7049905, 21149715]

約数ペア:

[(1, 21149715), (3, 7049905), (5, 4229943), (15, 1409981), (167, 126645), (501, 42215), (835, 25329), (2505, 8443)]