21196065

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128461}}^1$

素因数の和:128480

約数の個数: 16

約数和(自身を含む): 36997056

約数和(自身を除く): 15800991

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 128461, 385383, 642305, 1413071, 1926915, 4239213, 7065355, 21196065]

約数ペア:

[(1, 21196065), (3, 7065355), (5, 4239213), (11, 1926915), (15, 1413071), (33, 642305), (55, 385383), (165, 128461)]