19802775

素因数分解:

$3^1\times 5^2\times {\mathrm{229}}^1\times {\mathrm{1153}}^1$

素因数の和:1395

約数の個数: 24

約数和(自身を含む): 32912080

約数和(自身を除く): 13109305

約数列:

[1, 3, 5, 15, 25, 75, 229, 687, 1145, 1153, 3435, 3459, 5725, 5765, 17175, 17295, 28825, 86475, 264037, 792111, 1320185, 3960555, 6600925, 19802775]

約数ペア:

[(1, 19802775), (3, 6600925), (5, 3960555), (15, 1320185), (25, 792111), (75, 264037), (229, 86475), (687, 28825), (1145, 17295), (1153, 17175), (3435, 5765), (3459, 5725)]