21603753

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{541}}^1$

素因数の和:599

約数の個数: 40

約数和(自身を含む): 35414280

約数和(自身を除く): 13810527

約数列:

[1, 3, 9, 17, 27, 29, 51, 81, 87, 153, 261, 459, 493, 541, 783, 1377, 1479, 1623, 2349, 4437, 4869, 9197, 13311, 14607, 15689, 27591, 39933, 43821, 47067, 82773, 141201, 248319, 266713, 423603, 744957, 800139, 1270809, 2400417, 7201251, 21603753]

約数ペア:

[(1, 21603753), (3, 7201251), (9, 2400417), (17, 1270809), (27, 800139), (29, 744957), (51, 423603), (81, 266713), (87, 248319), (153, 141201), (261, 82773), (459, 47067), (493, 43821), (541, 39933), (783, 27591), (1377, 15689), (1479, 14607), (1623, 13311), (2349, 9197), (4437, 4869)]