641128509

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{143333}}^1$

素因数の和:143417

約数の個数: 24

約数和(自身を含む): 1073284992

約数和(自身を除く): 432156483

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 143333, 429999, 1003331, 1289997, 3009993, 9029979, 10176643, 30529929, 71236501, 91589787, 213709503, 641128509]

約数ペア:

[(1, 641128509), (3, 213709503), (7, 91589787), (9, 71236501), (21, 30529929), (63, 10176643), (71, 9029979), (213, 3009993), (497, 1289997), (639, 1003331), (1491, 429999), (4473, 143333)]