20280405

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79531}}^1$

素因数の和:79556

約数の個数: 16

約数和(自身を含む): 34357824

約数和(自身を除く): 14077419

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 79531, 238593, 397655, 1192965, 1352027, 4056081, 6760135, 20280405]

約数ペア:

[(1, 20280405), (3, 6760135), (5, 4056081), (15, 1352027), (17, 1192965), (51, 397655), (85, 238593), (255, 79531)]