217031787

素因数分解:

$3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{19913}}^1$

素因数の和:20099

約数の個数: 24

約数和(自身を含む): 360363744

約数和(自身を除く): 143331957

約数列:

[1, 3, 7, 9, 21, 63, 173, 519, 1211, 1557, 3633, 10899, 19913, 59739, 139391, 179217, 418173, 1254519, 3444949, 10334847, 24114643, 31004541, 72343929, 217031787]

約数ペア:

[(1, 217031787), (3, 72343929), (7, 31004541), (9, 24114643), (21, 10334847), (63, 3444949), (173, 1254519), (519, 418173), (1211, 179217), (1557, 139391), (3633, 59739), (10899, 19913)]