199916991

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{3089}}^1$

素因数の和:3165

約数の個数: 40

約数和(自身を含む): 323040960

約数和(自身を除く): 123123969

約数列:

[1, 3, 9, 17, 27, 47, 51, 81, 141, 153, 423, 459, 799, 1269, 1377, 2397, 3089, 3807, 7191, 9267, 21573, 27801, 52513, 64719, 83403, 145183, 157539, 250209, 435549, 472617, 1306647, 1417851, 2468111, 3919941, 4253553, 7404333, 11759823, 22212999, 66638997, 199916991]

約数ペア:

[(1, 199916991), (3, 66638997), (9, 22212999), (17, 11759823), (27, 7404333), (47, 4253553), (51, 3919941), (81, 2468111), (141, 1417851), (153, 1306647), (423, 472617), (459, 435549), (799, 250209), (1269, 157539), (1377, 145183), (2397, 83403), (3089, 64719), (3807, 52513), (7191, 27801), (9267, 21573)]